Note: Descriptions are shown in the official language in which they were submitted.
a
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TITLE OF INVENTION
Screen Cassette and Compatible Framing Section Therefor
FIELD OF INVENTION
This invention relates to a retractable screen system for a closure
S assembly and improvements thereof which allows the secure sliding and
subsequent refraction of the screen from an operative position to a retracted
position. The invention is preferably embodied in a window assembly but finds
application also in large pivoting windows and patio doors. In the
improvements described herein the retractable screen is provided in a cassette
which is easily installed and maintained in a framing section.
BACKGROUND OF THE INVENTION
The reader is referred to Applicants Co-pending Applications
abovementioned for teachings in relation to improvements to closure
assemblies and retractable screen systems contained therein, the teachings
thereof which are hereby incorporated by reference.
Screens are generally provided for doors, patio doors, and windows.
One particular type of screen utilized for patio doors, for example, includes
a
metal frame having a groove disposed around its edges. The screen is affixed
to
the frame by using a spline, a long extended piece of flexible material, which
is
forced into the groove capturing the edges of the screen. The screen is then
slid
in front of the opening when the patio door is moved to an opened position.
The screen therefore permanently blocks the view of the occupant of the
dwelling. The same is true for screens provided with double-hung windows, tilt
and slide windows, and casement windows. The screen generally is always i n
position whether the window is opened or closed.
Various examples therefore have been developed by inventors to
address this problem.
For example, United States Patent No. 5,505,244 to Thumann
describes a retractable covering for a door including a housing containing a
roll
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of screen as best seen in Figures 2, 5, 6A and 6B thereof. The cover may be
affixed
to a door adjacent the frame thereof as an after-market product.
Another example of an after-market type of product is found i n
United States Patent No. 4,821,786 as best seen in relation to Figure 6
therein, the
structure is adapted to be mounted on one side of a door jamb to be
releaseably
connected to the other. The assembly is quite complicated and complex and may
be considered as an add-on structure.
Similarly, United States Patent No. 3,911,990 provides a screen in
combination with a sliding door. The screen is disposed upon a spring-loaded
roller installed on the exterior of the framing sections of the opening
adjacent to
the window frame.
United States Patent No. 4,757,852 describes a box-like housing
carrying a tube for paying out and taking up a mesh screen. The housing is
fastened over a window or door and is not part of the framing section of the
door.
United States Patent No. 4,651,797 describes a roll-up screen door
included in a narrow housing containing a conventional spring-biased roll onto
which flexible screen material is taken up and paid out. The housing is
mounted
adjacent one side of a vertical curved strip along one side of the door
casement
opening. The front vertical edge portion of the screen material is anchored
within a vertical groove of the anchoring strip as best seen in Figures 3 and
5.
Again, the housing extends from the framing section and is not part thereof. A
more complex arrangement is found in United States Patent No. 4,359,081 and
United States Patent No. 4,261,524.
Referring now to United States Patent No. 1,150,000 to Matthews,
there is described a window screen coiled on a roller for installation on a
window
frame. The roller for the window is illustrated in Figure 5 including a hook
portion for hooking a complementary hook portion on the screen. The other
edge of the screen includes a hook portion for engaging with the trim portion
34.
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United States Patent No. 1,141,996 to Vanasdale describes another
type of roller screen which may be attached to the sill or lintel portion of
the
frame by mounting brackets as best seen in relation to Figures 1 through 6.
None of the above-mentioned references teach or even infer the
installation of a screen within the framing sections of a closure assembly
such as
a jamb. Each of the products may be considered as an after-market product
which
is installed upon, adjacent to, on or butting up against the framing section
of the
appropriate closure member. In essence, some of the installations are
unsightly
with a housing extending from the general plane of the home or window,
extending either outwardly away from or inwardly toward the interior being
closed by the closure member. It would therefore be advantageous to solve this
problem by providing a screen assembly which may be contained within the
framing sections of a closure assembly and which retracts into the frame
member
and which is substantially invisible until such time as needed.
United States Patent No. 4,825,921 describes a screen assembly
having supporting elements secured along the edge of the material as best seen
in relation to Figures 4 and 7. The structure also includes a spring-biased
element which rides in a track. As best seen in Figures 9 through 11, the
screen is
considered to be an add-on, after-market device as well.
United States Patent No. 3,842,890 to Kramer describes a coilable
closure device as best seen in Figures 1 and 18 which includes a frame
including
a side jamb and a storage jamb, 34 and 36 respectively. The coilable closure
device does not include a post and includes a multiplicity of sections as best
seen
in Figures 1 and 6 which sections include elements extending up into and down
into respective track areas provided with the frame. The material which coils
upon itself is particularly plastic sheet including reinforcing ribs which
also act as
guiding elements for the sheet. However, nowhere within the reference does it
teach the use of such a structure for a screen, but merely as a closure to
replace a
door between adjacent rooms, for example. Nowhere within the reference does
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it teach the combination of a closure member such as a window or patio door
and a screen. This is simply not described. Therefore, one would not be
motivated to solve the problem of combinations of closure members and screens
by the reading of the Kramer reference.
S There are a number of manufacturers producing a style of screen
in a kit form to be assembled onto the exterior of a housing on existing
windows
as an after-market product.
Known roll screen fastening technologies fastens the screen cloth to
the drum with tape, glue, and other bonding methods. The handle may have
the screen cloth affixed thereto by using conventional attachment methods such
as utilizing a semi-flexible bead pressed into a groove as described above or
by
sandwiching the screen between a two part mechanical handle profile which
may be fastened by screws , rivets or the like. Preferred Engineering has made
attempts at crimping the screen into a metal edge and inserting the edge into
the
drum and the handle as described in the parent application. Although this is a
reasonable approach, it has been determined that no flexibility is achieved by
such a joint and the screen still had a tendency to tear.
Nowhere therefore within the prior art is there taught
improvements to screen assemblies, wherein the entire screen assembly is
contained within the framing sections found adjacent to a closure member in a
closure assembly, for example a window assembly. Further, nowhere within the
art is there found a roll-out screen assembly embodied in a cassette which may
be
readily inserted within the hollow of a framing section sized to receive said
cassette or screen assembly. Further, nowhere within the art is there found a
roll-out screen assembly embodied in a cassette having mounting brackets of a
predetermined shape which may be readily inserted within the hollow or pocket
of the same shape as the bracket disposed within a framing section and sized
to
receive said cassette or screen assembly. Further, nowhere in the prior art is
there
manufactured a screen having an abutment on one edge thereof for engaging
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with a cooperative abutment on the roller of a screen assembly which may be
cut
to size as desired to repair a roller screen assembly. Further, nowhere within
the
prior art is there found various improvements to roll-up screen assemblies to
simplify their installation, adjustment and replacement.
Nowhere within the prior art is such a simplified improved screen
assembly provided which retracts into the jamb, sill or header of the frame
portion of a window assembly in the retracted position and which is preferably
guided to its operative position in guides provided with the jamb, sill or
header,
and which allows for the manufacture of more durable screens in larger
sections
without continuously covering of the window and particularly when the
window is in the closed position.
It is therefore an object of this invention to overcome many of the
deficiencies in the prior art stated above which allows for smooth and simple
operation of a retractable screen which is capable of both sliding within a
guide
channel between the retracted and the operative positions and which at the
retracted position is fully contained within the jamb, sill or header section
of the
closure assembly.
It is a further object of the invention to provide a retractable screen
assembly of appropriate size and construction to replace existing retractable
2 0 screen assemblies for casement, double hung and / or tilt and slide
windows as
well as patio doors.
It is further a primary object of this invention to provide a roll-up
screen embodied in the frame of a closure assembly which is retractable into
the
frame itself without requiring an additional housing.
It is a further object of the invention to provide a roll-up screen
assembly in the form of a cassette which may be mounted within the hollow of a
framing section, which cassette may or may not include a front fascia portion
to
close the framing section. When said cassette does not include a front fascia
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portion a clip on supplementary portion may be provided if required to close
the
framing section
It is yet a further object of this invention to provide a continuous
roll of screen manufactured so as to be cut at a predetermined width and
include
an anchoring element disposed adjacent one edge of the screen so as to allow
ease of installation of the original or replacement screen so formed.
It is yet a further object of the invention to provide a method of
manufacturing a screen.
It is yet a further object of the invention to provide a cassette which
may be side mounted into an opening of the framing section and closed by an
exterior fascia element.
It is yet a further object of the invention to provide a closure
assembly including a roll-up screen contained with one of its framing sections
adjacent the closure member.
1 S It is yet a further object of the invention to provide improvements
in mounting brackets, fascia elements, and screens.
It is a further object of this invention to develop a product that
provides parallelism to opposing screen and handle edges which provides
accurate paying out and accumulating on the roller so that the screen winds up
precisely without twisting or binding.
It is a further object of the invention to provide a screen assembly
having high strength and resistance to tearing which will not tear or peel
from
the corners and is easily able to accept dimensional variation in the window
opening being covered.
2 S It is a further object of the invention to provide a screen assembly
which facilitates ease of manufacture, and replacement.
It is yet a further object of the invention to provide a screen cassette
for a closure assembly which includes compatibly shaped pockets and brackets
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disposed with the closure frame and screen respectively to provide simple
installation and maintenance
It is yet a further object of the invention to provide improvements to the
aesthetics of a screen cassette for a the closure assembly.
It is yet a further object of the invention to provide improvements to a
screen cassette for any closure assembly regardless of the materials of
manufacture used, for example wood, plastic, aluminum, and fiberglass or the
like.
Further and other objects of this invention will become apparent to
a man skilled in the art when considering the following summary of the
invention and the more detailed description of the preferred embodiments
illustrated herein.
SUMMARY OF THE INVENTION
This invention relates to a retractable screen system for a closure
assembly and improvements thereof which allows the secure sliding and
subsequent retraction of the screen from an operative position to a retracted
position. The invention is preferably embodied in a window assembly but finds
application also in large pivoting windows and patio doors. The closure member
may further comprise a window sash being a casement, double hung, or tilt and
slide installation or, a door or a patio door.
There is therefore provided improvements to screen assemblies,
wherein the entire screen assembly is contained within the framing sections
found adjacent to a closure member in a closure assembly, for example a window
assembly. Further a roll-out screen assembly is embodied in a cassette which
may be readily inserted within the hollow of a framing section sized to
receive
said cassette or screen assembly. The screen material has an abutment on one
edge thereof for engaging with a cooperative abutment on the roller of a
screen
assembly which may be cut to size as desired to repair a roller screen
assembly
which simplifies their installation, adjustment and replacement.
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There is also provided a simplified improved screen assembly
which retracts into the jamb, sill or header of fhe frame portion of a window
assembly in the retracted position and which is preferably guided to its
operative
position in guides provided with the jamb, sill or header, and which allows
for
the manufacture of heavier screens in larger sections without continuously
covering of the window.
In a tilt and slide, casement or double hung window a retractable
screen is provided disposed within the header, sill or jamb of the assembly
which
screen accumulates on and pays out from a spring biased roll disposed within
said header, sill or jamb, the screen being retractable for egress or cleaning
purposes, and available as desired by providing a detent on the opposilzg
framing
member engageable with a detent provided with the screen when in its operable
position.
According to yet another aspect of the invention there is provided a
window assembly comprising a retractable screen disposed within a framing
portion of the assembly, the screen accumulating on and paying out from a
spring biased roll disposed within said frame portion, the screen beW g
retractable
for egress or cleaning purposes, and available as desired by providing a
detent on
the opposite frame portion engageable with the screen when in its operable
position.
According to yet another aspect of the invention there is provided a
closure assembly comprising a retractable screen disposed within a framing
portion of the assembly, said framing portion providing a pocket within which
the screen is contained in use, said pocket being bound by three sides of said
framing portion thereby forming said pocket, said pocket being closed by a
separate cover closing said framing portion, preferably said retractable
screen
being mounted on said cover and being positioned in said pocket when the cover
closing the pocket is installed preferably by clipping a detent provided with
said
cover in a channel provided with one of the sides of said framing portion
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providing the pocket, the screen accumulating on and paying out from a spring
biased roll disposed within said frame portion, the screen being retractable
for
egress or cleaning purposes, and available as desired by providing a detent on
the
opposite frame portion engageable with the screen when in its operable
position.
According to yet another aspect of the invention there is provided a
continuous screen formed as a continuous web and adapted to be utilized for a
retractable screen for windows, doors and the like having a predetermined
width
of screen determined by the width or length of the closure member frame, said
width of said screen having two ends, preferably each of the ends having an
anchor or key shaped element fixed thereto adapted to engage a detent on a
handle proximate one end of the screen and adapted to engage a detent of a
preferably spring biased, preferably hollow, roller utilized for taking up and
letting out the screen in a coil upon said roller, alternatively the handle
end of
the screen alternatively having a tape or continuous strip of adhesive applied
thereto so as to engage and be captured by a handle portion of said screen
when
utilized in a closure assembly, said screen and said anchor or key shaped
elements being cut at a predetermined length to fit said roller when assembled
and being installed with said closure assembly and preferably within a hollow
of
one of said frame sections, wherein said screen may be utilized as an original
installation or as a replacement screen for an original installation.
According to yet another aspect of the invention, there is provided a
retractable screen assembly for a closure assembly, said closure assembly
including a closure member surrounded by framing portions from which the
closure member is supported, said closure member including framing sections,
2 5 one of said framing sections providing a pocket within which said screen
assembly is retained in use, said screen assembly comprising a cassette
engageable
with the interior of a cover utilized for closing the framing portion and
pocket of
the closure assembly, preferably said pocket being located proximate the
sealing
end of the closure member, said retractable screen including a handle portion
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affixed thereto including a first detent, the opposite jamb from said pocket
including a latching portion including a second detent which engages the first
detent of the handle portion when the screen is in the fully open position,
wherein said cassette may be installed within any convenient pocket disposed
within the framing portions of a closure assembly and fixed in position once
the
cover covering the pocket is installed. In a preferred embodiment, brackets
are
provided having channels which capture preferably T-shaped guides on the
interior of said cover which allow for the fixing of the brackets in relation
to the
specific screen assembly being installed, said screen assembly also including
a
hollow tube to which said screen is anchored via a detent on the tube and via
a
detent on one end of said screen, the other end of said screen including
another
detent for engaging with the detent of a handle portion of said assembly, said
tube having inserted within the ends thereof a pin assembly which will not
rotate in relation to said tube as a result of rib portions disposed with said
assembly engaging rib portions disposed within the hollow of said tube, each
of
said pin assemblies including a pin for engaging a pin-receiving opening
disposed with each of said brackets, wherein said brackets may be fixed with
respect to the interior of said cover thereby fixing the entire screen
assembly as a
cassette, one of said brackets being adjustable in relation to said torque
tube in
order to allow for adjustment and variations from installation to
installation,
preferably said handle portion including telescoping guides which capture the
ends of said screen and are retained within a hollow within said handle, said
guides for riding within a channel disposed with opposite or opposing framing
sections to guide the screen across the opening defined by said closure member
when desired. In an alternative embodiment, the brackets may include a box-
like element which rests at the bottom of a framing section and being locked i
n
position because of the compatible dimension of the bracket with the pocket of
said framing section and adjustable in position in relation to the bottom of
the
framing section in order to provide for variations in manufacturing.
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According to yet another aspect of the invention, there is provided a
method of assembling a retractable screen cassette comprising:
(1) providing a tube upon which said screen will coil up in use,
(2) providing a pin assembly insertable into the open ends of said
hollow tube and being prevented from rotating with respect to said tube as
ribs
disposed with said tube, engaged ribs disposed with said pin assembly,
(3) providing a torsion spring having ends which are engageable with
at least one of said pin assembly ends for providing the correct torsion and
tensioning of said spring,
(4) inserting said spring within the hollow tube and inserting said pin
assemblies within said hollow tube and fixing the preferred one end of said
pin
assembly to the type portions of said torsion spring,
(5) providing brackets from which said pin assemblies will be
adjustably inserted, said brackets being locked in place with respect to the
assembly, preferably either by engaging with a detent provided with a flexible
cover or alternatively by engaging with the bottom pocket of the framing
section,
(6) adjusting said brackets in relation to the distance from one another
so as to correctly tension and carry the screen assembly,
(7) fixing said screen on said screen assembly by anchoring said screen
to said tube via a detent, preferably a T-shaped detent or key for engaging
with a
key slot on the tube or alternatively by using welding or adhesive, and
coiling
said screen upon said tube,
(8) fixing said opposite end of said screen to a handle portion either
preferably by a T-shaped detent engaging a T-shaped detent with said handle,
or
by welding or an adhesive,
(9) coiling said screen upon said tube,
(10) preferably engaging said cover portion with said brackets,
(11) inserting said screen assembly within a pocket of said closure
assembly in one of the framing portions thereof,
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(12) covering said pocket with a flexible cover.
According to yet another aspect of the invention, there is provided a
continuous roll of screen which may be paged out from said roll by an
installer
or manufacturer to a required predetermined window size, or alternatively
patio
door size, said screen comprising a free end which allows the installer to pay
the
screen off of the roll upon which the screen is accumulated course upon
course,
one end of said screen being disposed at the end of the courses accumulated on
the roll from which the screening is paged off and the other end being a free
end,
said screen having side edges and preferably being manufactured from
preferably
vinyl-coated fiberglass, the edges of said screen having affixed thereto a
generally
preferably T-shaped key manufactured from a flexible material, for example
polyvinyl chloride, which is affixed preferably by radio frequency welding (or
RF
welding) with the edges and preferably each of the edges, and in one
embodiment at least one edge of said screen, wherein the vinyl coating
provided
on the screen melds with the polyvinyl chloride key to form a resilient anchor
for the screen device within any screen roller assembly. Preferably the
polyvinyl
chloride preferably generally T-shaped key has a head extending from a leg in
the
shape of a preferred T, or alternatively a Y, or any other convenient shape so
long as said shape is compatible with the receiving groove on the handle and
roller tube, the leg of said key preferably including two separable portions
within
which the edges of a screen interfit prior to RF welding. The screen is paged
off
of the roll upon which it is accumulated to the desired dimension of the
window
or closure such as a patio door wherein the screen will be installed, said
screen
being cut at that predetermined length cutting also the key proximate at least
one
end of said screen, said screen thereafter being installed in the screen
assembly or
alternatively replacing the existing screen in a convenient quick replaceable
format. Preferably the generally key-shaped edge portion of the screen having
the two legs which capture the screen therebetween prior to RF welding
includes
an extension portion between the head of the preferably T-shaped key and the
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two portions capturing the screen and said extension not being RF welded to
the
screen. This extension portion is utilized to provide a flexible zone and
accommodates flexing in the screen assembly in a zone other than the screen.
This zone is designed to stretch a predetermined amount and thereby minimize
tearing of the screen when subjected to a tensioning load. In a preferred
embodiment, the screen which is cut to size for the assembly is installed in a
screen assembly with one of the keys being installed in a preferably spring-
biased
roller upon which the screen will accumulate, and the keyed edge remote said
roller is attached to a handle, said roller and said handle each having a
compatibly-shaped groove, channel or recess disposed therein to capture the
key
portion proximate the edges of said screen. In a preferred embodiment, the
screen is included in a screen roller assembly embodying a cassette which is
installed within a pocket defined in a closure assembly of any of the closure
assemblies defined above in any of the apparent applications which are hereby
1 S incorporated by reference. The screen assembly may also be utilized in
known
conventional window assemblies. The pocket provided in the window frame is
sized of a predetermined shape to accept the roller screen assembly which
includes all of the necessary mounting pivots and preferably the mounting
brackets to mount the roller screen assembly within the pocket in the window
frame and preferably proximate the inside corner of the jamb or sill or
header,
depending on whether the window is a tilt-and-slide window or a double-hung
window. For example, a jamb pocket would comprise two inside sides of a jamb
of a window or patio door frame assembly, said jamb provides a pocket between
said sides within which said roller assembly may be installed utilizing a
corner
bracket installed where the two sides of the jambs meet, or substantially at
that
point. The jamb sections or alternatively the sill and header also include
recesses
proximate the distal ends thereof for each of the sides thereof to accommodate
a
snap-fit cover. In this way, the roller assembly can be proofed, that is to
say
installed and tried and proven prior to installing the cover unlike the
previous
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embodiment which described the roller cassette being installed on the cover
and
being snapped into place. It has been discovered that it is much more
efficient
and convenient to install the roller assembly separately in the pocket
utilizing a
corner bracket and a snap cover.
In another embodiment, the roller assembly is installed within a
casement window assembly. In a further embodiment, the roller assembly is
installed within a tilt-and-slide window assembly. In another embodiment, the
roller assembly is installed within a double-hung window assembly. In another
embodiment, the roller assembly is installed within a patio door assembly.
In a preferred embodiment, any of the aforementioned window
assemblies may further comprise grooves disposed adjacent to the sill and
header, or alternatively the vertical jambs depending on the window type to
receive an extension portion of the handle of the screen assembly also engaged
with the keyed edges of the screen assembly described above and at the same
time
engaging the grooves (or channels or the like) to maintain the parallelism of
the
top and bottom or side portions in motion depending again on the window type
as the screen is paged out and accumulated on the screen roller contained with
the pocket provided in the frame.
In a preferred embodiment of the invention, the handle portion
disposed proximate one edge of said screen assembly includes a latch portion,
which is preferably disposed centrally in the handle portion, said latch
portion
for engaging a compatible detent disposed proximate the edge of a window sash
and moveable between a position wherein said latch engages said detent of said
winaow-sash-whereat-when-said-window sasimis-siic~ within--its track;-said-
screen
will pay out from said roller automatically, and when said window is returned
to
its closed position said screen will accumulate on said roller automatically,
wherein at an unlatched position said window will move between its opened
and closed position without the screen, wherein should it ever be required to
re-
engage the screen with the detent on the window sash, the user merely slides
the
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window to the closed position wherein the latch of said screen will engage
with
the detent of said window sash automatically. Preferably the leading edge of
said
detent provided with said window sash has a chamfered edge to cause the latch
including a hook portion to ride up on said chamfered edge and engage with a
compatible hook portion disposed with said detent of said window sash.
According to yet another aspect of the invention, there is provided a
method of manufacturing a screen roller assembly comprising the following
steps:
1) forming a screen from suitable screen material such as fiberglass and
preferably coating said screen with vinyl,
2) forming a generally key-shaped anchor for said screen preferably from
polyvinyl chloride, preferably said key having a head and a leg comprising two
portions and a connector connecting said leg to said head, preferably said
head
being generally T-shaped,
3) separating the two leg portions for receiving the edges of said screen,
4) radio frequency welding said leg portions capturing said edges of said
screen and preferably melding said vinyl of said screen with the PVC of said
key,
5) forming a continuous screen to be accumulated on a roll as roll stock to be
supplied to the window manufacturer or repair organization,
wherein at any time a predetermined amount of screen rnay be paged off the
roll
stock roll sized to a predetermined window opening size which may be easily
assembled with the spring-biased roller upon which the screen will accumulate
by a manufacturer or by a repair person and which also may be engaged with the
handle portion proximate the other edge of said screen, both said roller and
said
screen handle including a compatibly shaped generally key-shaped receiving
portion to receive the head of said key for easy installation or replacement
thereof.
In a preferred embodiment, the screen may be installed in any
assembly as a replacement screen.
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It is important that the legs of the key portion be separated from the
head portion by a flexible extension to allow for the accommodation of
stretching
in the screen assembly at that particular location when assembled without
destroying the screen. It has been found that the screen when melded together
with the PVC key has considerably more strength than the known methods of
taping and gluing screen edges to rollers and handle portions. The flexibility
is
provided by the flexible key shape and material. Any suitable material can be
utilized including those materials which readily accept hot welding. However,
radio frequency welding is preferred because one does not have to allow for
creeping of the material and the allowances of temperature differentials. Cold
dies may be provided which come together to provide a reliable joint which may
be accurately controlled.
The present invention advantageously fits into any existing frame
design thereby reducing cost, easing assembly and improving appearance. It is
only necessary to provide a pocket with the jamb, header or sill of any window
design within which the screen roller assembly is placed preferably as a
cassette.
According to the latest aspect of the invention a roll of improved
continuous screening is provided comprising a preferably "T" shaped edge
preferably formed from tough flexible material fused to the screen material
along
the edges of the screen to which a handle and roller drum are to be fixed,
preferably said "T" edge being provided proximate both edges of a continuous
roll of mesh. Since any excess screen material is stored on a screen roller
making
up the screen assembly as previously described one may only need as little as
one
or two standard widths of screen size to service the industry. The other
dimension is cut to length and need not be accurate as it rides in a track in
the
window assembly.
To produce a screen one cuts from roll stack the "T" edge screen to
fit inside the frame opening of the window allowing for the guiding track
depth
less any clearances required. The roller drum and handle are cut to screen
length
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providing for clearance as required. The "T" edge of the cloth is slid into
the
drum slot and the other "T" end being slid into the handle slot thereby fixing
the
screen to the critical components. A telescoping glide with its own "T" slot
groove supports the screen in the guide track at each end thereof and allows
the
glide the freedom to move back and forth on the "T" edge of the screen taking
up
the opening tolerance.
Because the "T" edge is flexible and able to stretch, any local load o n
the screen cloth will distribute itself over a wide range of fibers of the
screen thus
improving the impact and tear resistance of the system. In the event that
screen
was pushed it would pay out the stored material to the end limit reducing
dramatically the stress forces on the system. With the high tensile capability
of
the "T" edge system, the risk of failure of the system is greatly reduced. In
servicing a screen that is already installed on site, a bolt of screen cloth
carried by
the service person need only be cut to the right length, the cover removed
from
the system to give access, the old screen cloth slide out and the new screen
cloth
rethreaded. There is no need for any other component replacement if they are
sound.
In a preferred embodiment the "T" shaped key may further
comprise a "T" head, which will hold the screen into a compatible
substantially
dovetail-like groove disposed with the roller and/or the handle, a fusing zone
where the screen is fused to the "T" with the head being preferably a min.
.375
inches, and a body zone between the head and the fusing zone with no screen
material for providing the flex and stretching of the screen. It is important
that
the screen cloth be integrally fused to the key over some distance to achieve
maximum strength.
The screen is self storing within the frame of the window by virtue
of accumulating on a roller similar to the operation of a roller blind. It is
paged
out by pulling on a full length handle which is guided by a rail at each end.
The
window frame includes a guide channel for the screen which tracks and covers
CA 02249147 1998-09-30
. . _ 18 _
the free edges of the screen. The handle provided with the screen engages the
adjacent sash frame section with latch detents provided which will maintain
the
screen under tension from the dispensing drum and covers the opening created
when the sash is opened by sliding in the track wrinkle free and bug tight.
According to yet another aspect of the invention there is provided a
closure assembly comprising a retractable screen disposed within a framing
portion of the assembly, said framing portion providing a pocket within which
the screen is contained in use, said pocket being bound by at least two sides
of
said fiarning portion thereby forming said pocket, said pocket being closed by
a
separate cover closing said framing portion, being positioned with respect to
said pocket prior to the cover closing the pocket is installed preferably by
clipping
detents provided with said cover clipping into in a channel provided with at
least one of the sides of said framing portion providing the pocket, the
screen
accumulating on and paying out from a spring biased roll disposed within said
frame portion, the screen being retractable for egress or cleaning purposes,
and
available as desired by providing a detent on the opposite frame portion
engageable with the screen when in its operable position.
In one of the alternative embodiment described above , the mounting
brackets may include a box-like element which rests at the bottom of a framing
section and being locked in position because of the compatible dimension of
the
bracket with the shape of the pocket of said framing section and adjustable i
n
position in relation to the bottom of the framing section in order to provide
for
variations in manufacturing. Applicant has focused on this approach in
relation
to the latest cassette embodiments for roll screen installations requiring n o
fasteners as described in relation to the brackets of most of the previous
embodiments. Although the invention is described in relation to screens its is
implied that the structures defined herein equally apply to other materials
which
accumulate on a roller such as blinds, window shades and the like.
CA 02249147 1998-09-30
, . _ ly _
According to a primary aspect of the improvements to the aforementioned
inventions, there is provided a closure assembly comprising a frame for
moveably retaining a closure member, said frame comprising a header, sill, and
vertical jamb sections, at least one of said sections including at least one
pocket
formed within the interior thereof, said at least one pocket having a first
predetermined configuration defined by the interior of the section and for
receipt
of a roll screen pivotally supported upon at least one bracket having a second
predetermined configuration compatible with said at least one pocket having a
first predetermined configuration, said at least one bracket utilized with a
second
bracket and preferably like in kind to said at least one bracket for
removeably
retaining the roll screen, said at least one bracket and preferably said
second
bracket being removeably held in position with respect to said frame only by
said
at least one pocket having a first predetermined configuration and said at
least
one bracket having a second predetermined configuration compatible with said
1 S at least one pocket and being located in said at least one pocket in use,
wherein
the compatible shapes of said at least one pocket and said at least one
bracket
cooperate to prevent the at least one bracket from rotating with respect to
the at
least one pocket and said frame when said roll screen is let out or taken in.
According to a another aspect of the invention, there is provided a
closure assembly comprising a frame for moveably retaining a closure member,
said frame comprising a header, sill, and vertical jamb sections, at least one
of
said sections including a pocket formed within the interior thereof, said
pocket
having a first predetermined configuration defined by the interior of the
section
and for receipt of a roll screen pivotally supported upon a pair of brackets
having
2 S a second predetermined configuration compatible with said pocket having a
first
predetermined configuration, said pair of brackets utilized for removeably
retaining the roll screen, said pair of brackets and being removeably held i n
position with respect to said frame only by said pocket having a first
predetermined configuration and said pair of brackets having a second
CA 02249147 1998-09-30
- 20 -
predetermined configuration compatible with said pocket and being located i n
said pocket in use, wherein the compatible shapes of said pocket and said pair
of
brackets cooperate to prevent the pair of brackets from rotating with respect
to
the pocket and said frame when said roll screen is let out or taken in.
In a preferred embodiment an edge of said section having said
pocket and forming the frame may further comprise a supplementary portion in
use preferably being snap fit into a retaining portion provided with the
section
for closing the section. In a preferred embodiment the frame is made up of
standardized sections which all include pockets. This feature allows for ease
of
manufacture and minimum inventories.
According to a yet another aspect of the invention, there is provided
a roll screen cassette for installation in a closure assembly having a frame
for
moveably retaining a closure member, said frame including a header, sill, and
vertical jamb sections, at least one of said sections including a pocket
formed
within the interior thereof, said pocket having a first predetermined
configuration defined by the interior of the section and for receipt of the
roll
screen, said roll screen comprising a pair of brackets from which said roll
screen
is pivotally supported, said pair of brackets having a second predetermined
configuration compatible with said pocket of said frame section having the
first
predetermined configuration, said pair of brackets utilized for removeably
retaining the roll screen within said pocket in use, said pair of brackets and
roll
screen being removeably held in position with respect to said frame only by
said
pocket having the first predetermined configuration and said pair of brackets
having a second predetermined configuration compatible with said pocket and
being located in said pocket in use, wherein the compatible shapes of said
pair of
brackets and said pocket when installed in said frame section cooperate to
prevent the pair of brackets from rotating with respect to the pocket and said
frame when said roll screen is let out or taken in use.
CA 02249147 1998-09-30
- 21 -
In a preferred embodiment the first and second configurations for
the pockets and brackets respectively are arc shaped (portions of an arc of a
circle).
Alternative embodiments may be of any compatible geometry (for example,
rectangular, hexagonal and triangular or the like). Installation of the screen
for
example in a tilt and slide window is as follows. Other window installations
are
similarly installed with the exception that, for example with double hung
windows the upper and lower brackets are left and right brackets.
The header frame section of the frame housing the upper screen
bracket includes a void positioned above the jamb section pocket for temporary
receipt of the bracket to allow for the bottom bracket to be positioned so as
to
avoid contact with the sill section by raising the upper bracket into said
void
providing a temporary clearance for the bottom bracket to allow it to be
rotated
and positioned in the pocket of the jamb. The bottom sill portion of the frame
which houses the bottom bracket includes a supporting shelf for the bottom
screen bracket. The roll screen carrying the top and bottom screen brackets is
positioned to engage the upper portion of the frame firstly with the upper
bracket
extending into the pocket. The bracket is subsequently raised into the void
provided with the header so that the bottom bracket clears the sill and the
support shelf therein. The screen is then pivoted around the top bracket so as
to
be parallel to the supporting jamb frame and the bottom bracket is
subsequently
dropped into position so that the upper and lower brackets with predetermined
shapes engage with compatible shapes of the pockets of the jamb section. N o
further assembly is required with the exception of the option of the snap fit
supplementary portions. The screen and screen support components and the
method of manufacturing the screen and assembly of the screen and screen
support components are otherwise identical in makeup and function to previous
embodiments described.
According to still yet another aspect of the invention there is provided a
closure assembly comprising a retractable screen disposed within a framing
CA 02249147 2005-02-14
-22-
portion of the assembly, said framing section including a pocket having a
predetermined shape, the screen accumulating on and paying out from a
spring biased roll pivoting on brackets having the same predetermined shape
as the pocket, said screen and brackets constrained within the pocket of said
S frame portion without the need of fasteners, wherein the screen is
retractable
for egress or cleaning purposes, and available as desired, preferably by
providing a detent on the opposite frame portion engageable with the screen
when in its operable position.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a schematic perspective view of a tilt and slide
window, wherein said windows move in a horizontal direction, illustrated in a
preferred embodiment of the invention.
Figures 1A and 3B are partial schematic perspective views of
casement style windows embodying the invention and depicting the motion
thereof illustrated in a preferred embodiment of the invention.
Figures 1C is a partial schematic perspective view of straight line
windows embodying the invention and depicting the motion thereof and
illustrated in a preferred embodiment of the invention.
Figure 1D is a partial cutaway view of the casement style
windows of Figure 1A depicting a rollaway screen thereof and illustrated in a
preferred embodiment of the invention.
Figure 2 is a front view of the window of Figure 1.
Figure 2a is a top view of the window of Figure 1.
Figure 2b is a end view of the window of Figure 1.
Figure 2c is a front view of the window of Figure 1.
Figure 3 is a double hung window assembly utilizing hardware
similar to that of Figure g and illustrated in a preferred embodiment of the
invention.
Figure 4 is a perspective illustration of the hardware only for a
double hung window of Figure ~.
Figure 5 is an exploded perspective view of the components of
the hardware of Figure 4 to be installed in a double hung window assembly.
CA 02249147 2005-02-14
- 23 -
Figure 6 is a carrier design illustrated in a preferred embodiment
of the invention which allows for ease of removal of a window from a window
assembly and illustrated in an exploded perspective view.
Figure 7 in an assembled view of the components of Figure 6.
Figures 8A and 8B are illustrations of tilt and slide windows
assembly primarily for the hardware therefore and illustrated in an
alternative
embodiment of the invention.
Figure 9 is a schematic view of the movement of shoes of Figure 8
illustrated in alternative of the invention.
Figure 10 is a perspective illustration of a pulley arrangement
installed at the corners of the window assembly of Figure 8 and illustrated in
alternative embodiment of the invention.
Figure 11 is a close-up perspective view of a locking mechanism
for the shaft assembly 30 illustrated in a preferred embodiment of the
invention.
Figure 12 is an end view of the locking mechanism of Figure 11
illustrated in a preferred embodiment of the invention.
Figure 13 is an end view of a locking block assembly illustrated in
a preferred embodiment of the invention.
Figure 13A is an end view of the track profile used in conjunction
with the lock block assembly of Figure 13 and illustrated in a preferred
embodiment of the invention.
Figure 13B is a top schematic view of the lock block assembly of
Figure 13 shown engaging the rack portion of the track and illustrated in a
preferred embodiment of the invention.
Figure 13C is a side cross-sectional view of the adjusting cap
screw used to adjust the track within the sill or header or jamb portions and
illustrated in a preferred embodiment of the invention.
CA 02249147 1998-09-30
- 24 -
Figure 14 is a top view of the carrier for the shaft assembly of Figure
17 and illustrated in a preferred embodiment of the invention.
Figure 14A is a cross-sectional view through the diameter of the
opening 35b of Figure 14 illustrated in a preferred embodiment of the
invention.
Figure 15 is an top end view of the sash portions for a tilt and slide
window assembly from the opening end of the window and illustrated in a
preferred embodiment of the invention.
Figure 15A is a close up view of the section of the assembly of
Figure 15 where the sash abuts with the sill and illustrated in a preferred
embodiment of the invention.
Figure 16 is a schematic end view of a central locking system best
seen in Figure 1~ and illustrated in a preferred embodiment of the invention.
Figure 16A is an end view of the central locking system of Figure 16.
Figure 16B specifically illustrates the latching plate and latch of the
central locking system and illustrated in a preferred embodiment of the
invention.
Figure 17 is an exploded perspective view of a window sash for a tilt
and slide or casement window illustrated in a preferred embodiment of the
invention.
Figure 18 is an exploded perspective view of the header, sill and
jamb portions of the window assembly illustrating the track and its
positioning
in relation to the sill and header and illustrated in a preferred embodiment
of
the invention.
Figure 19 is an exploded perspective view of a retractable screen
assembly illustrated in one embodiment of the invention.
Figure 20 is a similar view to that of Figure 19 illustrating another
embodiment of the invention.
Figure 21 is a cross-sectional view of a frame portion containing the
retractable screen illustrated in a preferred embodiment of the invention.
CA 02249147 1998-09-30
- ~ - 25 -
Figure 22 is a schematic view of a screen manufactured in another
embodiment of the invention illustrated in a preferred embodiment of the
invention.
Figure 23 is a schematic view of the installation of the screen of
Figure 22 in a retractable screen assembly and illustrated in a preferred
embodiment of the invention.
Figure 24 is a cross-sectional view of the hollow tube upon which
the screen is rolled up and illustrated in one embodiment of the invention.
Figures 25A and 25B are side and end views of the pin assembly
shown in Figure 19 and illustrated in a preferred embodiment of the invention.
Figures 26A and 26B are side and end views of the slide illustrated
in Figure 19 and shown here in a preferred embodiment of the invention.
Figures 27A and 27B are side and end views of the bushing of Figure
19 illustrated herein in a preferred embodiment of the invention.
Figures 28A through 28C are top end and side views of the
mounting bracket of Figure 19 illustrated in a preferred embodiment of the
invention.
Figures 29A through 29C are side, top and end views of the guide
portion illustrated in Figure 19 and shown here in a preferred embodiment of
the invention.
Figure 30 is an end view of the screen handle illustrated in Figure
19 and shown here in a preferred embodiment of the invention.
Figures 31A and 31B are top and side views of the screen lock
illustrated in Figure 19 and shown here in a preferred embodiment of the
invention.
Figures 32A and 32B are top and side views of the latching plate of
Figure 19 and shown here in a preferred embodiment of the invention.
Figure 33 is an end view of the sealing block shown in Figure 19 and
illustrated here in a preferred embodiment of the invention.
CA 02249147 1998-09-30
- 26 -
Figure 34 is a side view of the cover portion for the jamb section of
Figure 21 and illustrated in a preferred embodiment of the invention.
Figure 35A is a top view for a tilt and slide window assembly
containing the roller screen mechanism illustrated in a preferred embodiment
of
the invention.
Figure 35B is an end view of the window assembly of Figure 35A
illustrated in a preferred embodiment of the invention.
Figure 36 is a schematic perspective view of the glide portions of the
screen assembly illustrated in a preferred embodiment of the invention.
Figure 3~ is an exploded perspective view of the glide assembly of
Figure 36 illustrated in a preferred embodiment of the invention.
Figure 38 is a schematic perspective view of a tilt and slide window
assembly as shown in Figures 35A and 35B and illustrated in perspective in a
preferred embodiment of the invention.
Figure 39 is a perspective view of the handle portion 435 and the
latch portion 436 illustrated in perspective in the preferred embodiment of
the
invention.
Figure 40 is a perspective view of the screen assembly incorporated
in the tilt and slide window assembly of Figure 38 and illustrated in a
perspective
view in a preferred embodiment of the invention.
Figures 41 through 43 are partial perspective cut-away views of the
screen assembly including the T-shaped portion and the method of assembling it
with the screen and illustrated in preferred embodiments of the invention.
Figure 44 is a schematic perspective view of a tilt and slide window
assembly illustrated in a preferred embodiment of the invention.
Figure 45 is a schematic perspective view of the screen cassette
assembly illustrated in a preferred embodiment of the invention.
Figure 46 is an exploded perspective view of the components of the
screen assembly illustrated in a preferred embodiment of the invention.
CA 02249147 1998-09-30
_ 27 _
Figure 47 is a close-up perspective view of the latch detents of
Figure 44.
Figure 48 is a similar view to that of Figure 19, an exploded
perspective view illustrating in a preferred embodiment of the improvements to
the invention a roll screen cassette being installed in a vertical jamb.
Figure 49 is a perspective view of the roll screen cassette isolated
from the frame section.
Figures 50 through 55 illustrate in a preferred embodiment of the
invention the roll screen cassette being installed in a window frame
illustrating
the sequence of events taking place to complete such an installation.
Figures 56 through 63 illustrate the various components of the
pivot for the roll screen cassette C illustrating the bracket in perspective
views,
side views, end views, and top and bottom views in preferred embodiments of
the invention.
Figures 64 and 65 illustrate cross section and perspective views of
the jamb section 10' showing the arcuate pocket P' within which the bracket
311'
will be contained in use.
Figures 66, 67, 68 and 69 illustrate compatibly shaped brackets and
pockets as examples of various embodiments of the invention without being
restrictive.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to Figure 1, 2 through 2b there is illustrated a tilt and
slide window assembly. Therefore the assembly 5 includes an outer frame
portion t0-which-is--normally hung--within an-openimg-established in a
building
(not shown). Normally nailing flanges are provided for this purpose attached
to
the outer frame 10. The frame 10 includes top portion 17 and bottom portions
16
having tracks disposed therein, as best seen in relation to Figure 2. Within
the
tracks are contained a pivot assembly which will be hereinafter described.
Primarily the pivot assembly includes a pinion 35 and carriers 38 and 37
CA 02249147 1998-09-30
_ 28 _
interconnected by interconnecting portions 32 and 31 making up an
intercoruzecting member 30. The pinions move, as the window 20 is slide in the
track portion by the movement of the pinion 35 with respect to the rack 18 or
19
respectively. In this way the pinions 35 being interconnected remain parallel
at
all times in their motion along the track within which the rack 19 or 18 is
disposed. The hardware is shown in normal view while the window assembly is
shown in dotted lines, to illustrate the essence of the assembly.
Referring now to Figure 2 there is illustrated the window of Figure
1, wherein a window 20 and 40 is slidable within a track 15 and 17 upon a shoe
39. The lower shoe 39 also is connected to a secondary show 39a for carrying
the
window which includes rollers 39b, 39a1 and 39b2 on the bottoms thereof
respectively for ease of movement within track 17. The pinion 35 rests within
the shoe 39 as will be described hereinafter. The arrangement of the
interconnecting portion 30 will also be described hereinafter. Window 40
therefore has its own interconnected system as can be best seen in relation to
Figures 2a and 2b.
Referring now to Figure 2a there is illustrated the sash elements 20
and 40 and the rack portions 19 and 19a which accommodate the motion of the
pinion 35 along a full length of the track, as best in Figure 2b.
Referring to Figures 1, 2 to 2b clearly the track portion 17 and 15
cooperate with the rack portions 19 and 19a to provide for the pinion 35 and
its
motion when the window remain slidable within the track. By interconnecting
the two pinion portions and hence the two pivot shoes, by interconnecting
means 30, the shoes remain in a substantially parallel position in relation to
one
another at all times. This overcomes the problem described in the background
of
the prior art. By remaining parallel it is almost impossible for the window
therefore to come out of the track when the window is pivoted to be cleaned
and
therefore is no longer necessary to provide braking portions as in previously
CA 02249147 1998-09-30
- 29 -
described inventions of Canadian Thermo Windows, as referred to in the
background of the invention.
Referring to Figures 1A and 1B there is illustrated a casement style
window having similar components to that found in relation to Figure 1 with
the exception of only one sash being provided being secured on shaft assembly
30
including portions 31 and 32. A link L is provided secured proximate ends L1
adjacent the center of the sash 21 proximate the bottom thereof and adjacent
the
track 18 adjacent the opening end of the window sash 21. By positioning the
sash
in this manner a full range of pivoting motion is available. If the link end
L1 is
removable than the window sash may be moved totally to the opposite end
remote the pivoting end 21b on shoe 39. As with the case of the tilt and slide
window a shoe 39 containing a pinion is provided. The pinion is connected to
the shaft 30 and engages the rack 18 as it moves along the window sill and
header
in parallel arrangement between the upper and lower pivots maintained i n
parallel by the shaft 30. In this manner the casement style window may be
pivoted as normal to an open position, and the pivoting end may be moved to
the other end of the window frame away from side 21b to allow ease of
cleaning.
By supplying the hardware described without a casement sash the casement
window may be assembled without the need for expensive pivots and linkages
and without a great deal of assembly labour. As best seen in Figure 1D for the
casement style window in particular a rollaway screen S may be provided which
is housed in jamb 17a as illustrated. The screen S pulls across to engage
detent D1
with detent D2 in jamb 16a, whereat it may be locked. This allows a user to
clean
the glass of sash 21 on the inside without removing the screen.
Referring to Figure 1C there is illustrated a tilt and slide type
window similar to figure 1 with the exception that when closed the window
sashes will be oriented in a straight parallel line with one another. In order
for
this to happen the rack provided 18 includes a portion 18a made from fiber
filled
plastic or the like and joined at seam 18c to an aluminum track 18b. The sash
21
CA 02249147 1998-09-30
' - 30 -
is therefore moveable as previously described on carrier 39 and rollers 39a as
urged by pinion 35 until the pinion reaches the curved portion of the track 18
a
wherein the assembly 30 will move along the curve to the terminus of the track
18t. The sash portion 21a will then lock in behind the edge of the sash
contained
in track 18' and be lockable at that position. The sash 21'(not shown) resides
on
assembly 30' in track 18'. As pinion 35' moves within the limits of rack 18'
the
sash 21 cannot adopt a parallel position unless sash 21' is in its fully
closed
position. Only then can the end 21a adopt its fully closed position butting up
against the sash 21' at the end opposite the carrier assembly 30 and 39.
Referring to Figure 3 there is illustrated a double hung window
assembly embodying the preferred embodiment of the hardware making up the
invention substantially equal to that which is disclosed in Figure 1, with the
exception that a coil spring 31a is provided around the connector portion 31
of
the interconnecting portion 30. By providing the interconnecting portion 31
1 S with a spring 31a it will no longer be necessary in a double hung window
assembly to provide a sash balance, as the spring 31a is pre-loaded to provide
the
necessary tension, much the same as a spring which is used in a garage door.
In
this example as a garage door goes up and down the spring is compressed and
tensioned depending on the motion of the door and therefore provides for the
return motion of the window assembly. Within the window assembly sashes 20
and 40 shown in ghost line are moveable with hardware substantially made up
of a pivot or pinion 35 moving on a rack 18 and 19 respectively and being
interconnected by the interconnecting portion 30.
Referring to Figures 4 and 5 there is illustrated the hardware which
is installed within the double hung window assembly of Figure 3. Pinions 35
therefore are provided, which seat within the carriers or shoes 39. The pinion
includes a shaped opening 35a which is compatible with the bar stock 34c and
32a
proximate the ends thereof. The pinion therefore will ride on the rack 18 and
19
within shoe 39. Opposed supplementary portion 37 is provided to oppose the
CA 02249147 1998-09-30
' - 31 -
shoe 39 as it rides in the track. Therefore, referring to Figure 2b the
portion 37
and 38 may be readily seen. A combined ratchet and pawl assembly is provided
with portion 37 or at least connected therewith. The pawl assembly 37c is
resilient biased through the opening 37d of member 3~ so as to release the
ratchet
34b of shaft 34 when the window is to be removed from the assembly. Proximate
the other end of the hardware there is provided a backing member 38 in a
unique _
shaft extension 33 which includes portions 33b, 33d, 33c and 33a wherein the
shaft end 32a extends through. A locking nut 33e is provided to lock the
entire
hardware together and to allow for ease of separation thereof. An adjustable
connector 31b is provided proximate the other end which allows for adjustment
with regard to the length of section 32 of the shaft so as to allow variation
in the
sizes of the assembly supported. Portions 31, 31b, 32, and 33 makeup the shaft
assembly which allows for ease of installation, adjustment, alignment and
removal of the sash assembly. Also the hardware therefore described provides
for the interconnection of the pivot shoes proximate their sides and provides
for
parallel motion of the pivot shoes at all times thereby illuminating the need
to
lock the pivot shoes in the track assembly.
Referring to Figure 6 there is a description of a different shoe
construction which is useful when a window is removed, since the carrier will
be locked in position when the window is removed for maintenance or for
cleaning. Therefore the shoe 39 includes a spring b and a recess therefor and
a
supplementary portion 39d and a finger a therefore wherein teeth c are
provided
on supplementary portion 39d which teeth are biased by spring b against the
pinion 35 to thereby lock against pinion 35 and prevent the motion of the
carrier
when the window is removed. A sloped wall d is provided with the carrier
supplementary portion 39d which is engaged by a separate simple latching and
unlatching mechanism which thereby releases the supplementary portion away
from the pinion or toward the pinion when the latch is opened. Therefore when
the latch engages the supplementary portion d it will drive the supplementary
CA 02249147 2005-02-14
-32-
portion 39d away from the pinion 35 thereby allowing free motion of the
pinion in normal circumstances. However when the latch is disengaged the
portion 39d will be free to move as biased by the spring b toward locking the
pinion 35 via the teeth c of the supplementary portion 39d. The alternate show
of Figure 6 and 7 has an opening 39a within which the extension 35a passes to
engage the connecting member 30 as previously described. The rollers 39b
engage with the notches as shown to improve the motion of the carrier in the
track.
Referring now to Figure 8A, 8b, 9 and 10 there is illustrated an
alternative embodiment of the invention to maintain the carrier pivots 61, 65,
60 and 81 in substantially parallel alignment and thereby eliminate the need
for
braking mechanisms. Figure $ is illustrated as a tilt and slide frame in ghost
line with the window 70 also shown in the ghost line having pivot 75 and ~1.
The pivots ~5 and 71 engage with openings within the shoe 61 and 65 in the
manner which is known. These pivot pins ~5 and 71 may be removed from
these shoes merely by retracting them from the locked positions. The sash 70
therefore is moved on the carrier 81, 82 and 83 proximate the bottom thereof
in
the track portions as shown and within carrier 60 on the top thereof. A
similar
sash arrangement would be arranged for the other shoes as well but for
simplicity sake this is not illustrated. The important aspect is that a cable
91 is
connected to the carrier b0 and the carrier assembly 81, 82 and 83
substantially
as shown in Figure 9, so that when the window moves toward the right hand
side of the drawing that both carriers will move an equal amount by the
movement of the cable maintaining the pivots 75 and 71 within -the shoes 60
and 81 substantially parallel at all times. Similarly, a cable 90 is provided
which moves in conjunction with carriers 63, 62 and 61 and the shoe 65, as
best
seen in Figure 9, so that as the shoe 65 is moved in a direction D2 that the
carrier 61, 62 and 63 will also be moved in the direction D2. Figure 9
therefore
shows the path of the cable connecting the carrier described above.
CA 02249147 1998-09-30
_ 33 _
In order to allow for the movement of the cable the unique pulley
arrangement is illustrated in Figure 10 wherein the cable will travel through
the
respective channels 107, 108 and 105a within the wheel 105, or through 106,
104,
105a within the opposite wheel or pulley 105. Assembly 101 is therefore
provided which is affixed within the window frame via opening 101a and a
fastener, not shown, which assembly allows for the movement of the cable and
hence the carriers in a manner as best seen in Figure 9.
Referring now to figures 11 and 12 there is provided a locking
mechanism for the shaft 30 which may be used with any lousier assembly. A
handle assembly H is provided including a stationary portion H2 fixed to the
sash 21 and a moveable spring biased portion H1 biased to a continual locked
position via spring leaf S2. The handle portion H1 includes a pivot H4 and
detent portions H5 and H6. Normally the spring S2 will cause the handle
portion
H1 to remain in engagement at detents H5 and H6 with gear portion or
serrations 30Z of the shaft 30. Therefore the window or door is locked in that
position and cannot be pivoted or slid. When a user engages the handle H1 and
presses it towards H2 the detents H5 and H6 release from the gears 30Z and
hence
the window or door may be repositioned as desired. At that repositioned
location
when the user releases the handles the window or door will again become
locked.
Referring now to Figures 13, 13a, 13b, 13c and Figure 18, there is
illustrated a track portion 18 and 19 which is to be installed within, as
shown i n
Figure 18, the sill and header 220 of a frame assembly also including upwardly
extending jamb portions 220a. The track portions 18 and 19 therefore are
installed within the profiles as seen in Figures 2b and 18 by the provision of
a
lockW g block assembly 200 which includes an adjuster nut 210 which engages
the
rack portion 18x of the rack 18a of the track profile 18 as best seen in
Figure 13a.
The profile therefore includes the rack 18a, a riding portion for the rollers
18e
which will be explained hereinafter, and a recess 18d wherein a carrier as
best
CA 02249147 1998-09-30
' - 34 -
seen in relation to Figure 14 rides with the exception of the rollers. The
track 18
therefore must be locked in position in the sash 220, and this is affected by
the
locking block 200 and the moveable nut 210. As best seen in Figure 13c, the
track
is inserted into the sill profile as shown so that the carrier may ride on the
track.
The assembly of Figure 17 for the sash is therefore eazgaged with the carrier.
The
block 200 therefore is screwed down through the profile 15 into the wooden
frame member not shown via opening 15c in the profile and 204 in the block
200.
Two fasteners 205 therefore are provided, and as shown in Figure 13, they are
inclined at an angle to the vertical in order to allow for the provision of an
adjuster 206 which is accessible through the opening 207 in the block 200
wherein
a cap screw having a head 206a having an alien key type access slot is
provided.
The threading 207b extends down to the end 207a proximate the nut 210.
As best seen in Figure 13, the lock block 200 and the locking nut 210
have a profile substantially as shown with a triangular shaped cut out
provided
1 S adjacent the top thereof and wherein abutting portions 201 and 203 are
provided
to engage with the flanges 15b and 15a of the profile 15 of the sill portion
220.
The triangular cutout portion includes an upwardly vertical face 202a, and
bottom 202. Similarly the nut has a shoulder 211 provided and a substantially
triangular shaped cut out 212 and an upwardly extending face 212a for engaging
with the sill profile 15 similar to that which is illustrated and described in
relation to Figure 13. The rotation therefore of the cap screw 206 results in
the
movement of the nut 210 in relation to the block 200 which is fastened in
position. The adjustment therefore of the screw allows for the thread to
engage a
threaded opening not shown in the nut 210 so that the rack portions 213a
provide engagement with the rack 18a of the track portion 18 and will allow
for
fine adjustment in the positioning of the track 18 and the locking in position
of
the track. It has been found sufficient that by providing the block and the
adjustment of the nut, it will sufficiently position and lock the track in
position
and allow for the adjustment of the track which will then further allow for
the
CA 02249147 1998-09-30
- 35 -
adjustment of the pivots as best seen in Figures 1, 1a, 1b, 1c, Figure 2,
Figure 3 and
Figure 17 so that the parallelism is not lost, and if fine adjustments once
installed
are required to the window sash to maintain the parallelism of the system,
this is
very easy to do. Should the system go out of parallel and require fine
adjustment
to restore the parallelism, a mere rotation of the head 207 is required for
both the
sill and headers 220 so that the system is squared.
The notch portion defined by the faces 202a and 202 have a unique
purpose in that the latch portion 251 as well as 250, as best seen in figure
17, will
engage with the face 202a and provide a lock detent for the lock 251. This
adds
reinforcement to the lock provided in that should the triangular shaped detent
of the block not be provided, then the lock 251 would engage flange 15a and in
time would wear out that flange in that particular locking position. The nut
210
has a similar function so that either the nut or the block can function as the
detent for the latch. Specifically in Figure 18, the screw 206 is shown being
engageable from the nut toward the block, and in fact it is accessible in
either
direction as shown in Figure 13 and Figure 18 without changing the advantages
of the system. For access purposes, depending on the installation and the type
of
window, it may be easier to adjust as shown in Figure 18 as opposed to Figure
13.
Preferably the block is made from fiber-filled nylon. Alternatively, the block
may
be made from aluminum. The nut may be made from fiber-filled nylon as well.
Referring to Figures 14, 14a and 18, there is illustrated a carrier 39x
which includes a pivot portion 35 for engaging with the shaft portion 32 and
34c
of the pivot assembly and for carrying that shaft assembly and the pivoting
end
of the sash in the track 18 and 19 respectively of Figure 18. The carrier
includes a
portion 39y provided therewith to carry the rollers 39b therein. This is very
similar to the carrier illustrated and described in the previous descriptions
and
more specifically in relation to Figure 1a and 1b, with the exception that the
details of the carrier were not shown at that time in relation to the thrust
wheel
35c provided on the bottom.
CA 02249147 1998-09-30
- ~ - 36 -
The carrier, as best seen in Figure 1a therefore rides on the rollers
on the track profile seen in Figure 13A on the surfaces 18e for the roller
wheels
39b and in the notch or cut-out recess 18d for the side portions adjacent the
roller
39b at 39z. The pinion portion 35 therefore has an opening 35b for receiving
the
shaft 32 which extends toward the bottom of the opening 35d and which opening
35b as best seen in Figure 14 is compatible with the shape of the shaft 32.
The
outer surface 35a of the opening 35b is compatibly shaped with the opening i n
the carrier so that the opening 35b may be accessible to the shaft 32. At the
bottom of the pinion portion 35 is a thrust wheel carrying portion 35e which
carries the thrust wheel 35c. The thrust wheel 35c therefore rides in between
the
shoulders 18c and 18b on the surface 18d of the track profile 18. The thrust
wheel
is provided to accommodate any wind load which may be placed on the system
when the window is opened. Further, in the normal meshing of gears with a
rack, there is a thrusting force created as the pinion 35 moves on the rack
18x.
Therefore, the thrusting wheel will engage from time to time the shoulders or
the surfaces defined by the shoulders 18c and 18b so as to maintain the
parallelism and the accuracy of the installation of the window system. A
pinion
gear 35a is therefore provided between the thrust wheel 35c and the pivot
receiving opening 35b which operates substantially as described in relation to
Figure 1A and Figure 1 in that as the window rotates the pivot rotates causing
the gear 35a to rotate and move on the track. This is particularly
advantageous
when the pivot assembly is provided on a casement window as best seen in
relation to Figure 1A in that it is desirable to have the window move away
from
a pocket provided in the window jamb as best seen in relation to Figure 1D so
that the sash profile will not engage the jamb profile but will readily clear
the
jamb profile as the window is opened. For example, as best seen in Figure 1D,
proximate the top thereof, it may be readily seen that a pocket is provided in
the
jamb profile so that the pivot assembly 30 is accommodated at that end of the
window. However, a flange portion unlabelled engages the sash cover portion
CA 02249147 1998-09-30
37 _
so that within the jamb J1 there is a pocket J2 provided which improves the
seal
of the window in that the cover portion SC extends into the pocket J2 when the
sash is closed. However, when the sash is pivoted as in the case with the
casement window of Figure 1C, the pinion gear when pivoted will move the
sash and the sash cover SC out of the pocket J2 away from the jamb J1 and
provide suitable clearance so that the sash cover SC will not engage with the
jamb portion J3 which is a flange and therefore will clear easily the pocket
and all
its enabling portions. When the casement window is closed, the opposite
happens and the sash cover SC will engage the pocket J2 and be moved i n
position with the pivoting of the window to the closed position.
The rollers 39b therefore provide a smooth motion of the closure
system in relation to the track which would not be present if the rollers were
not
provided since the track is made from aluminum. The rollers are not absolutely
essential in every embodiment, however, it is preferred.
Referring now to Figure 15, there is illustrated two sashes side by
side shown in end view. The sashes are made substantially as constructed in
relation to Figure 17 wherein the sash 220 is defined by a central I-shaped
portion
227 having an opening therein and two side abutting portions 225 and 226. A
pocket therefore for receiving the glass G is defined at 222. Fin seal
portions 221
are therefore provided for abutting the glass G which contains the normal
known seal portion SX. The window sash profiles also include flange portions
224 proximate the opening opposite the glass G. Within that opening there is
provided in use a closed cell caulking foam which is compressible at portion
240.
This portion extends totally along the sash profile within the opening as
shown
with the exception of the portion adjacent the pivoting assembly. A cover
portion therefore is provided at 230 which engages the tab portions 224
proximate each side of the sash profile. This cover portion when inserted is
flexed downwardly as the closed cell foam 240 is compressed as best seen i n
Figure 15a so that the flange portions of the cover at 230a engage with the
flange
CA 02249147 1998-09-30
_ 38 _
portion of the sash at 224 to provide a compressed seal for the track cover
230.
The track cover is defined as a track cover although it does occupy the sash
as a
component thereof in that as the sash is closed over the opening defined
between the flange portion 16a and 16b as best seen in Figure 15a, the snap
cover
portion will extend down into and engage with the flanges 16a and 16b, thus
covering the track and snapping into position each time the sash is opened and
closed. The typical seals BX and BY are provided as is known in the art.
Alternatively, as best seen in Figure 1D, the sash covers may
include alternative embodiments shown proximate the jamb portions 16a and
17a of the window assembly. Alternatively, a cover portion may be provided
over the track portion 15 of sill portion 220 and header portion 220 of Figure
18
that engages with the sash profile in a similar way to that of the track cover
of
Figure 15a with the exception that the track cover only extends over the
second
half of the track, that is to say the second half not carrying the window .
For
example as shown in Figure 2, the wheel portion 39a may be eliminated and the
track cover may extend along the track portion opposite the pivot assembly so
that the sash may slide on the track cover and be assisted to be supported by
that
track cover only in the second half of the track profile thereby eliminating
the
second carrier of Figure 2. The track cover therefore in Figure 2 as an
example
would extend from the carrier 39a toward the left side of the page to allow
the
pivot assembly 35 to move to approximately the position of the present carrier
39a wherein it would engage the track cover. In the movement of the carrier 35
to that position, the other end of the window would already be supported by
the
track cover. This installation theref-ore W ould-elirriinafe- the carrier39a.-
Referring now to Figure 16B, there is provided locking detents 250
and 251 which engage with the locking detent portions 202 and 212 of the lock
and nut portions 200 and 210. These locking portions 250 therefore and 251 are
operated by a handle 260 as best seen in Figure 16A which is rotatable to
cause the
motion of the rack portion 265 and the detent 250 into and out of the locking
CA 02249147 1998-09-30
' - 39 -
abutment provided with the lock block and the lock nut 200 and 210
respectively.
In Figures 16, 16A and 16B, the installation is provided for a casement window
assembly. In the United States Patent Application described in the Summary of
the Invention which was incorporated by reference, there is no provision of a
casement-style window lock. Nor was there the provision of a lock block or nut
detents 210 and 200 respectively. The handle therefore 260 is rotated by the
user
which causes the movement of the corresponding pinion gear 261, the rotation
of the pinion gear 261 affects the movement of the rack 265, and the latch
engaging portion 250a and 251a carried within the housings 255 and 254
respectively as best seen in relation to Figure 17. The rotation of the pinion
will
therefore also cause the motion of the rack portion 266 sufficiently as
provided by
the opening 266a of said rack portion to allow for engagement of said rack
portion with said rack portion 265 with the bottom portion affecting the
latching
and unlatching of detent 251. Intermediate the two latching portions for the
casement window is provided a second pinion 267 which is rotated effectively
by
the movement of the rack portion 266. Rotation of the pinion 267 causes
rotation of the pinion sector 268 which is engaged with the locking detent 269
for
the latch plate 270 and the detent 271 thereof. This latch plate is typical
for
casement windows as is the movement of the lock 269, i.e. the rotation
thereof.
However, with the central locking system provided with this invention, it is
the
one handle operation of both the detents 250 and 251 and the casement window
lock 269 which is in combination the essence of the central locking system.
Alternatively, the casement window portion may be left out and the essence of
the locking system therefore includes the locking block in the track which
provides a detent for the locks 250rand 251 respectively.
As best seen in relation to Figure 17, there is provided a cover C(x)
which hooks into the sash profile similarly to the cover 230 previously
described
in relation to Figures 15 and 15A through which the handle portion 260
extends.
Therefore, the latch assembly is contained within the sash profile, and the
only
CA 02249147 1998-09-30
- 40 -
portion extending outside of the sash profile is the handle portion. This
handle
portion is considerably smaller than the normal handle portion provided with a
casement window which is typically rotary, and there is a tremendous
elimination of components for a casement-type window. In fact, this will be
described hereinafter.
Referring to Figure 17, there is shown an exploded perspective view
of the window assembly which will fit into the track profile similar to Figure
18,
but more specifically which may be designed for a casement window. The sashes
220 are provided with an opening 227 wherein a corner connector 280 is
provided which extends into the opening 227 proximate all four corners and
eliminates the necessity for welding. Clip portions 281 bite into the vinyl
and are
tapered in a direction so as to prevent the removal of the corner connectors
once
inserted within opening 227. This snap lock feature therefore provides for the
installation of the corner connectors and the quick fastening of the sash
profile
around the glass G. The track covers 230 are therefore provided and snapped
into position once the closed cell foam, best seen in Figure 15a at 240, is
inserted
within the opening of the sash profile. The hardware including the carriers,
best
seen in Figure 18, which are then assembled within the opening opposite the
glass of the sash proximate each jamb portion in use. The hardware therefore
including the top and bottom track engaging portion 39x and 37x, the shaft 32,
the
connector 3lbx, the other shaft 31, and the small shaft 34c are provided
proximate
the pivoting end of the window assembly within the sash profile enclosed by a
cover similar to that of cover CX. The central lock as described in relation
to
Figures 16, 16A and 16B is therefore inserted within the other opening of the
sash profile and assembled and covered by the cover CX. The window sash is
now available for installation within the frame assembly of Figure 18 once the
carrier portions 39x are engaged with the respective shafts 32 and 34c. The
block
portions 200 are therefore locked in position once the track is installed in
the
frame, and the nut portions are adjusted to allow for the parallelism of the
CA 02249147 1998-09-30
~ - 41 -
carriers 39x within the tracks to ensure the parallelism of the sash so that
it rides
well within the track portions. The window is therefore assembled.
For a casement window, all of the prior art levers and latch
mechanisms are substantially eliminated. This means a great deal to window
manufacture in that there are a considerable number of screws and fasteners to
hold down the prior art lever linkages of the prior art systems. In the
present
invention, only the latch block fasteners are provided. The rest of the window
assembly merely snaps together with a friction fit of the sash profiles, the
sash
profile covers and the frames. A minimum of assembly labour is therefore
required with the installation of this window assembly. In one particular
situation where an old style double-hung window is installed within an
opening, it may be conveniently removed by an installer and the present
invention may be installed in any of its embodiments including a casement
window.
This is heretofore unknown in that a casement window occupies a
certain standard space in the industry, and because of the linkage systems and
the
known systems, it is not possible to provide a larger window. With the present
invention, a larger casement window may be provided which is easily installed
with the minimum amount of labour and assembly time required. Should the
window now be mis-alligned for any reason, it may be easily adjusted by the
rotation of the screw 206 provided. A sophisticated user therefore could
easily
adjust this once instructed over the phone by an installer, or alternatively
the
installer may return for a quick adjustment at any time. Also, the window
assembly is less likely to go out of adjustment because of the great care
taken i n
the development of the precision of the assembly.
A method therefore of assembling the window may be considered
as described in the above-mentioned description wherein, firstly the sash
components are assembled by the quick fastening feature of the corner locking
portions which are inserted within the opening of the sash profiles provided
and
CA 02249147 1998-09-30
- 42 -
provide one-way friction fit. The closed cell caulking is therefore inserted
within
the top and bottom of the sash assembled and these portions are covered by the
track covers by the compression of the closed cell foam and the engagement of
the tabs of the track cover with the tabs of the sash profile. The hardware is
then
installed along the vertical portions of the sash within the openW gs thereof
opposite the glass which is then covered by a sash cover portion provided. The
hardware located proximate the pivoting end is therefore installed on the
carrier
portions and inserted within the track portion within the sill and header, for
example of a window assembly. The window is therefore closed in position with
the sash covers or track covers located proximate the sill and header snapping
into the frame and closing any path for air to enter the window and pass the
primary seals provided as best seen in relation to the Figure 15A. The track
covers also provide blockage of light, air and the friction fit of the sash
into the
track portions. By providing a track cover along the track remote the pivoting
end of the window, this track cover may be used as support as well for the
window assembly.
In another embodiment not shown, a double casement window is
provided which is provided in a straight-line window, that is to say a frame
is
provided wherein a central mullion is disposed. A central mullion separates
two casement windows, one opening as a mirror image of the other and
containing all of the elements described above in relation to the pivot
assembly
and the central locking system and track system.
Referring now to Figures 1 and 1D, there is illustrated a retractable
screen contained within the opening of the jamb within a framing section for a
window assembly having a header 17, a sill 15, and two side jambs 5 and 10.
The
side jambs 5 and 10 are somewhat identical with the exception of the details
herein provided. One of said jambs 5 or 10, or for that matter in alternative
embodiments sill 15 and or header 17 may contain a retractable screen stored
on a
tube. This may be seen in relation to Figure 21 which is comparable to Figure
1D.
CA 02249147 1998-09-30
Y - 43 -
The screen assembly 300 includes a tube 305 having a pair of ridges 305a
contained within the hollow 300a thereof, said hollow 300a for receiving a
spring
301 being a torsion spring having two ends 301a and 301b. Said ends 301b and
301a for anchoring into the assembly and for ensuring that the spring stays i
n
constant torsion loading. A pin assembly 310 and 311 are disposed proximate
each end of said tube 305. The pin 310 includes an opening 310a for receiving
the
end 301a of said torsion spring 301. Likewise, the insert 302 includes an
opening
302a for receipt of the end 301b of the torsion spring 301. The insert 302
engages
the pin portion 311. The pin portion 310 engages the bushing portion 312. The
pin portions 310b and 311b are inserted within mounting brackets M1 and M2 for
mounting in the hollow of the jamb section. The rib portions 305a and 305b
engage with corresponding rib portions provided with the pin section 311 and
the bushing 312 to prevent rotation of the pins with respect to the tube
unless the
tube itself is rotated. With respect to the brackets M1 and M2, spacers S1 may
be
provided to orient and correctly space the screen assembly in the jamb portion
or
pocket within which the spring assembly retracts. The screen S is manufactured
from a flexible material and has disposed proximate the ends thereof screen
welding material or adhesive to adhere to the roller 305 and to the joint
provided with respect to the handle portion 320 illustrated best in relation
to
Figure 30. The other end of the screen is inserted within the alligator-type
locking jaw of Figure 30 between elements 320a and 320b to capture the screen
portion S2 therein. The screen portion 320 also includes a seal portion 321
which
will be described hereinafter which locks and is retained within a channel 322
provided on one edge of the aluminum handle portion. Openings 325 and 326
are provided with the handle assembly 320 so as to retain the guide portions
330
therein. The guide portions 330 are contained within the openings 325 and 326
of the handle portion 320 so as to guide the screen assembly as it pays out
from
the jamb in a track portion provided with the header and sill portion of the
framing sections. A latch portion and a latching plate 350 are shown with the
CA 02249147 1998-09-30
- 44 -
assembly. The latching plate 350 is affixed to the opposite jamb for engaging
with
the latching member 340 wherein the detents mate and cooperate to retain the
screen in its closed position. A seal 321 is contained within a seal receiving
channel 320a to seal against the opposite jamb and prevent bugs from entering
the living space. The guide members 330 include a leg 330a which are
compatibly
shaped with the opening 325 within the handle portion 320. The handle portion
320 is extruded from aluminum to form all of the details thereof. The bracket
portions M1 and M2 are mounted within a pocket P as seen in Figure 1
containing the roll 305. A cover plate 350 therefore is provided which snaps
into
place via the leg portion 350a being inserted within an opening provided
adjacent the jamb pocket. The jamb pocket therefore is defined by three sides
10a,
10b and 10c against which the closure member buts up against and seals. This
will be described hereinafter in relation to Figure 21. The screen assembly,
and
particularly the brackets of Figure 19 are therefore installed within the
frame
pocket P of Figure 21 as being keyed into said frame pocket and engaged with
the
rear wall 10c of the jamb 10. The roller cassette 300 is then installed within
the
pocket P being pre-tensioned and wherein the pin portions 311b and 310b are
inserted within openings 01 and 02 within said brackets, and the adjustment is
provided via the bottom bracket M2 including the spacer S1 with the
supplemental adjustment M3 to ensure that the roller is properly placed in the
system. The tension may be adjusted if required by removing the snap-on cover
portion 350 at any time. The handle portion 320 is specifically sized to be
received within the opening defined between the cover 350 and the adjacent
jamb portion 10b.
Referring now to Figure 20, there is illustrated a similar cassette
assembly for a retractable screen to that of Figure 19 with the exception of
the
mounting brackets and the particulars of the screen. All other elements are
identical or substantially identical. The brackets 360 therefore engage the
generally T-shaped guide 350b of the snap-on cover 350 proximate the generally
CA 02249147 1998-09-30
_ q.5 -
T-shaped channels 360b disposed therewith as best seen in relation to Figure
28b.
Only one of the T-shaped channels or pockets 360b therefore engage the T-
shaped
guide 350b which allows for a certain amount of adjustability in relation to
the
positioning and pre-tensioning of the screen assembly 300. The cover is
therefore utilized as a chassis to hold the screen brackets and hence the
screen
cassette. The edges of the screen S1 and S2 are therefore provided with
adhesive
in the form of a tape system to mount the edge S1 onto the hollow tube 305 and
to mount the edge S2 into the screen-receiving pocket of the handle portion
320
at 320a. The glides 330 at the end of the handle portion 320 telescope to
accept
manufacturing installation variations prior to snapping them into the flexible
frame track provided thereby providing a seal for the screen pocket and guide
rails.
Referring now to Figures 21, 22 and 23, the screen embodiments
shown in Figures 19 and 20 may be utilized with a screen assembly as best seen
i n
relation to Figures 22 and 23 which include generally T-shaped key portions S1
and S2 which are generally T-shaped and which engage with generally T-shaped
openings 305x and 350x within the tube 305 and within the handle 350 in one
embodiment of the invention thereof. By providing such a keyed relationship
between the handle and the screen, screen replacement becomes very easy
eliminating the need for adhesives and the general cutting of screen sections.
The screen width indicated as Z therefore is a constant for all screens.
Therefore,
one continuous screen may be manufactured having the keyed portions located
and anchored to the ends thereof as one continuous roll of screen having a
predetermined size or width Z which may be cut to the desired length as the
only
variable dimension when making the screen assemblies of Figures 19 and 20
and/or replacing the broken screen which might result under normal wear of
Figures 19 and 20.
Referring now to Figures 1D and 21, the screen assembly 310
included in the jamb does not compromise the typical framing size and
CA 02249147 1998-09-30
' . - 46 -
standards nor interfere with the window function. Clearly the closure member
or window 21 may be swung outwardly away from the jamb and be sealed against
the seal 21a in a closed position. Alternatively, when the window is a tilt
and
slide, the window 21 may be slid away from the jamb 10. When the window is i n
the closed position, there is no need for the screen to be utilized.
Therefore, the
screen assembly 300 remains hidden within the jamb portion 10 of the window
assembly. An esthetically pleasing result therefore is pleasant without the
unsightly screen being present and without the unsightly lines of an
additional
housing added onto the jamb section 10. The cover portion 350 including the
guide 350b may equally be utilized on the side 10b of the jamb 10. That is to
say it
is not necessary to have the cover 350 close the three-sided jamb sections
10a, 10b
and 10c from the front face thereof as shown in Figure 21. Equally, the side
face
10b and in one embodiment a preferred approach will be utilized for the cover
facing 350 wherein the cover therefore is not observable at the front of the
jamb
10 but only at the side making a much more esthetically pleasing installation.
Referring to Figures 24, 25A, 25B, 26A, 26B, 27A and 27B, there is
illustrated the tube of Figure 24 having a predetermined diameter and having
rib
portions 305a provided therewith which engage with the compatible detents
provided with the pin assembly at 311a which prevents the rotation of the pins
with respect to the hollow tube 305. In this way, the torsion spring 301 and
its
effort can not slip in relation to the pins 311b and 310b. Similarly, the pin
assembly embodying 302 as rib portions 302b to prevent rotation thereof with
respect to the tube portion 305 when engaged with the pin assembly portion
311.
An opening 302a is provided to engage the spring end 301b and help i n
2 5 establishing the loading and the constant torsion of the assembly.
Similarly, the
pin portion 310 has an opening 310a for engagement with the end of the spring
301a prior to insertion within the bushing 312 which also includes rib
portions
312a.
CA 02249147 1998-09-30
> _ 47 _
Referring now to Figure 28A, there is illustrated the bracket of
Figure 20 which bracket 360 includes a pin-receiving opening and a pair of
generally T-shaped openings 360b for receiving the guide portion 350b of the
flexible cover 350. Only one of the openings 360b is utilized depending o n
whether the bracket is being utilized as a top or as a bottom bracket.
Clearly, the
bracket has adjustability in that it may slide along the guide 350b in the
flexible
cover to the predetermined position to turn by the distance separating the
pins
311b and 310b in the screen assembly. The brackets then may be fixed in
position
utilizing glue or the like and may be fastened to the opposite wall 10c of the
jamb
10 of Figure 21 using conventional methods. It is recommended that the
fastening be a removable fastener type allowing for repair of the screen
assembly.
Referring now to Figures 29A and 29C, there is illustrated the glide
portion 330 shown in Figures 19 and 20 which glide portion has a generally T-
shaped guide-receiving portion 330b to retain the channel. The member 330a
therefore is provided to be inserted within the opening 325 of the handle
portion
320 to seal the entire assembly. Said foot 330a can be moved in and out of the
opening 325 to allow for adjustment as is required.
Referring now to Figure 30 in relation to Figures 19 and 20, the
handle portion 320 is therefore shown including alligator jaw-like portions
320a
and 320b as seen in Figure 20 for capturing the edge S2 of the screen S when
the
portion 320b is crimped and moved toward the edge of portion 320a capturing
the screen therebetween via serrated edges 320i of the side 320b of the joint.
A n
opening 325 is provided for receipt of the guide portion 330. The handle
portion
320i allows a user to remove the screen as required.
Referring now to Figures 31a, 31b, 32a and 32b, there is illustrating
the latching portions of the screen assembly comprising items 340 and 350. The
portion 340 is mounted on the handle portion 320 and is clipped in position
via a
hook portion 340b to be retained within a slot 320i and 340 as best seen in
Figure
19. This latching portion engages the latching plate of Figures 32A and 32B
CA 02249147 1998-09-30
_ q.g _
which is mounted via mounting openings 350b of the latching plate 350. The
opposite jamb is utilized to mount the latching plate 350 so that as the
screen
moves across the opening framed by the frame assembly, the detent or latch
portion 340a engages the latch portion 350a of the latching plate to retain
the
screen in its operative position. This can be released of course by
disengaging the
latching portions 340a and 350a respectively wherein the screen may be
retracted
within the opening in the jamb 10 of the framing section.
Referring now to Figure 33, there is illustrated the but seal 321
which is anchored in position within the groove 320a of the handle portion 320
via legs 321a. The bug seal 321 therefore buts up against the opposite jamb
portion not shown via edge 320b, that is the same jamb portion to which the
latching plate of Figures 32A and 32B is mounted.
Referring now to Figure 34, there is illustrated the cover portion 350
for the assembly of Figure 20 which includes an arm or leg portion 350a which
is
received within the channel 10x of Figure 21 which includes a locking edge at
350b to retain said arm 350a within the compatible groove 10x which also
includes a detent at 10y to correspondingly lock the flange in position. The
element 350c therefore is disposed within the interior side of the cover 350
to be
received within the channels or guides shown in Figures 28A through 28C at
360b and thereby retain the mounting brackets for the screen assembly in the
position required allowing the adjustment thereof and final fixing in relation
thereto.
Those skilled in the art will also appreciate the fact that a screen
assembly having two ends separated by a predetermined distance and being
formed as a continuous screen which may be cut as required at a predetermined
distance as set out by the length of the tube 305. The anchor portions S1 and
S2
are a fixed distance and are manufactured with the screen on a continuous
length of screening which may be cut as required including cutting these
anchor
CA 02249147 1998-09-30
- 49 -
portions as best seen in relation to Figure 23. This makes screen replacement
very easy.
The entire assembly therefore 300 is provided as a cassette totally
assembled and insertable into the jamb opening defined by the three sides of
the
jamb 10 at 10a, 10b and 10c. It is only necessary to provide the cassette
integral
with the cover portion 350 which may be either the front cover which clips i n
position as shown in Figure 21 or a side cover, not shown, but easily
determined
by those skilled in the art from the teachings herein.
Referring now to Figures 35A, 35B, 38, 44 and 40, there is provided a
tilt and slide window assembly 400 wherein a sash 405 including a window light
may slide in the track or pivot from the pivotable end thereof as is described
previously. The sash is pivotally mounted within a frame section including
jamb portions 410 wherein the screen assembly 420 is contained within the
opening or pocket 410a provided in the framing jamb portion 410. As is best
seen
in Figures 21 and 35A, the roller assembly best seen in Figures 40 and 45 is
contained within the opening 410a as fastened in position by a corner bracket
422,
as best seen in Figure 40. The jamb portion 410 is closed by a cover portion
410b
after the screen assembly 420 is located in its position by the corner bracket
422.
The screen will therefore pay out along the pathway 413 when the handle
portion 430 is moved along with the sash 405 when desired. A latch portion and
handle portion 435 and 436 respectively including a hook portion 436a engages
with a detent portion 406 at the hook portion 406a. The movement therefore of
the sash 405 will result in the movement of the screen 420 automatically and
pay
it out through the guide recess to cover as much of the opening as is desired.
That is to say that one may pay out the screen 10% or 100% to cover the
appropriate opening. Because of the design of the screen including the
telescoping guides as best seen in Figure 36, the screen is guided through
channel
412 as best seen in Figure 35B between fully closed and fully opened
positions.
The glide assembly therefore will accommodate and receive the upper edges and
CA 02249147 1998-09-30
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the bottom edges of the generally T-shaped screen portion as best seen and
described in relation to Figure 20. An upper glide 441 therefore and a lower
glide
442 is provided to ride within the respective channel portions 412 of the jamb
framing sections. The handle portion 430 therefore is adapted to receive the
leg
portions 441a and 442a of the glide portions respectively as best seen in
relation
to Figure 37. A bug block 440c is provided as is previously described. The
screen
therefore will pay out from its roller as best seen in Figure 40 and 45
including
the glides capturing the edge of the screen including the generally T-shaped
portion and riding within the guides 412 of the tilt and slide window
assembly.
When it is desired not to operate the screen, the latch 436 is operated to
separate
the detents 436a and 406a. The window will then operate on its own without the
screen. Should it be desired to recapture the screen, one merely closes the
window and snap locks the two detents together again to re-engage the screen
assembly. This is best seen in relation to Figure 38 and 44 wherein the screen
is
fully paged out and the latch 436 is engaged with the detent 406.
Referring now to Figures 41 through 43, there is illustrated the
method of assembling the screen with the generally T-shaped key portions. The
key portions 456 therefore are manufactured from polyvinyl chloride or the
like
which is a material that rnay be radio frequency welded. The key portions
therefore 446 include the head portion 456a for capturing within the
appropriate
groove of the handle and roller portion as best seen in relation to Figures
19, 21
and 22. The head portion therefore is separated from the two portions 456b and
456c, or alternatively 456d and 456e making up the leg to capture the screen
455
or sandwich it therebetween. In Figure 41, the two legs 456b and 456c are
generally connected to one another and separated from the head portion 456a by
a flexible extension 457 which is not radio-frequency welded to the screen
455.
This section 457 provides a considerable amount of flexing for the screen
assembly and reduction in damage to the screen 455 as a result of any
tensioning
load on said screen 455. Once the two screen-capturing portions 456b, 456c, or
CA 02249147 1998-09-30
_ 51 _
alternatively 456d and 456e, as seen in Figures 41 and 42 respectively,
capture the
screen 455, the screen is pissed through a radio-frequency welding machine
continuously preferably so as to form a continuous roll of screen accumulated
on
a roll for future use. As best seen in Figure 43, elements 450a of this screen
which is manufactured from vinyl-coated fiberglass are melded into the
polyvinyl chloride of the leg extensions 456d and 456e of the key element. In
this
manner, a tough and viable screen assembly is provided.
Referring generally to the figures a method of manufacturing a screen roller
assembly comprises the following steps:
1) forming a screen from suitable screen material such as fiberglass and
preferably coating said screen with vinyl,
2) forming a generally key-shaped anchor for said screen preferably from
polyvinyl chloride, preferably said key having a head and a leg comprising two
portions and a connector connecting said leg to said head, preferably said
head
being generally T-shaped,
3) separating the two leg portions for receiving the edges of said screen,
4) radio frequency welding said leg portions capturing said edges of said
screen and preferably melding said vinyl of said screen with the PVC of said
key,
5) forming a continuous screen to be accumulated on a roll as roll stock to be
supplied to the window manufacturer or repair organization,
A predetermined amount of screen may be payed of the roll stock roll sized to
a
predetermined window opening size which may be easily assembled with the
spring-biased roller upon which the screen will accumulate by a manufacturer
or
by a repair person and which also may be engaged with the handle portion
proximate the other edge of said screen, both said roller and said screen
handle
including a compatibly shaped generally key-shaped receiving portion to
receive
the head of said key for easy installation or replacement thereof.
It is important that the legs of the key portion be separated from the
head portion by a flexible extension to allow for the accommodation of
stretching
CA 02249147 1998-09-30
' - 52 -
in the screen assembly at that particular location when assembled without
destroying the screen. It has been found that the screen when melded together
with the PVC key has considerably more strength than the known methods of
taping and gluing screen edges to rollers and handle portions. The flexibility
is
provided by the flexible key shape and material. Any suitable material can be
utilized including those materials which readily accept hot welding. However,
radio frequency welding is preferred because one does not have to allow for
creeping of the material and the allowances of temperature differentials. Cold
dies may be provided which come together to provide a reliable joint which may
be accurately controlled.
The present invention advantageously fits into any existing frame
design thereby reducing cost, easing assembly and improving appearance. It is
only necessary to provide a pocket with the jamb, header or sill of any window
design within which the screen roller assembly is placed preferably as a
cassette.
As best seen in figure 46 to produce a screen one cuts from roll stack
the "T" edge screen 450 to fit inside the frame opening of the window allowing
for the guiding track depth less any clearances required. The roller drum 458
and handle 430 are cut to screen length providing for clearance as required.
The
"T" edge of the cloth 456a is slid into the drum slot 458a and the other "T"
end
456a being slid into the handle slot430a thereby fixing the screen to the
critical
components. A telescoping glide with its own "T" slot groove as previously
described supports the screen in the guide track at each end thereof and
allows
the glide the freedom to move back and forth on the "T" edge of the screen
taking up the opening tolerance.
Because the "T" edge is flexible and able to stretch, any local load on
the screen cloth will distribute itself over a wide range of fibers of the
screen thus
improving the impact and tear resistance of the system. In the event that
screen
was pushed it would pay out the stored material to the end limit reducing
dramatically the stress forces on the system. With the high tensile capability
of
CA 02249147 1998-09-30
' - 53 -
the "T" edge system, the risk of failure of the system is greatly reduced. In
servicing a screen that is already installed on site, a bolt of screen cloth
carried by
the service person need only be cut to the right length, the cover removed
from
the system to give access, the old screen cloth slide out and the new screen
cloth
S rethreaded. There is no need for any other component replacement if they are
sound.
The screen is self storing within the frame of the window by virtue
of accumulating on a roller similar to the operation of a roller blind. It is
payed
out by pulling on a full length handle which is guided by a rail at each end.
The
window frame includes a guide channel for the screen which tracks and covers
the free edges of the screen. The handle provided with the screen engages the
adjacent sash frame section with latch detents provided which will maintain
the
screen under tension from the dispensing drum and covers the opening created
when the sash is opened by sliding in the track wrinkle free and bug tight.
Referring generally to figure 47 the leading edge of said detent
provided with said window sash has a chamfered edge adjacent 406a to
cause the latch including a hook portion 436a to ride up on said
chamfered edge and engage with a compatible hook portion 406a
disposed with said detent of said window sash.
As can be seen with respect to Figure 19, it had been contemplated to
utilize a bottom bracket for the roll screen which would fit within a pocket
within a jamb section and whose shape would be compatible with the shape of
the pocket so as to prevent movement of the roll screen cassette without the
provision of fasteners. At that time, other embodiments as seen in Figure 20
and
Figure 45 in particular were being pursued. Figure 45 included brackets 422
which included openings for receiving a fastener as the screen was locked
within
the compatible jamb section. It was also contemplated to have a cover 350
attached to the screen cassette 300. Applicant has in perfecting its invention
created the embodiment of Figure 48 which for all intents and purposes is very
CA 02249147 1998-09-30
- 54 -
similar to the previous embodiment of Figure 19 as described above. For
example, all of the details with respect to the spring motor and the
construction
of the screen are substantially identical with the exception of the shape and
function of the brackets 311', the details of which are best seen in relation
to
Figures 56 through 63. The bracket 311' includes a pivot 311b' extending
upwardly from a plate A2 having one end being substantially arcuate in shape
at
A, and the other end being rectangular in shape at A1. Extending on one side
of
the bracket pivot 311b' is a screen-receiving opening 311a' bounded by
appendages 311d' and 311e'. The screen-receiving opening commences at a
mouth 311a extending to a mouth 311c'. The screen is accumulated on the roll
305' pivoted from the pivot 311b' via bushing member 312' and 302' having
openings therein not shown (which pivot from the pivots 311b'). The screen S'
includes two ends SX and SY which include portions S1' and S2' identically
formed with the previous description in relation to Figure 43 in a preferred
embodiment. Alternative structures, of course, are possible. However, the T
shape appendage S1' and S2' and the resilience of the section SY and SX
provide
for superior performance in a roll screen assembly. The screen ends S1' and
S2'
therefore are retained within the handle portion 322' and the roller portion
305'
at 305a' which portions 305a' and 322' are compatibly shaped to receive the
generally T-shaped appendages S1' and S2'. The spring 301' includes a
generally
rib-shaped portion 312' which engages the interior diameter 300a' intermediate
the ends of the roller 305' wherein the rib portions provided with the portion
312' engage the portions 305b' contained within the interior of the roller as
best
seen in relation to Figure 19 (and not shown in Figure 48) so as to allow for
the
winding up of the spring as described in relation to Figure 19. The arcuate
portion A of the bracket 311' fits compatibly within the pocket P' of the jamb
section 10' bounded by sections 10a', 10b' and 10c forming said pocket P' and
allowing for the containment of the bracket 311' and hence the entire screen
cassette C within the jamb section 10' disposed within a frame section 10'
CA 02249147 1998-09-30
.. - 55 -
between a header H' and a sill S'. The header H' includes a void H1' and a
channel H2' for receiving the glide portions 330' of the screen assembly to
guide
the screen assembly to and from the stored position. Likewise, the sill S'
includes
a channel S3' and a shelf S2'. The channel S3' is utilized for guiding the
glide
portion 330' on the bottom of the screen cassette C to and from the stored
position. The shelf portion S2' is for supporting the bracket portion 311' on
the
top thereof when the cassette is installed in the jamb section. The use of the
shelf S2' will be described in relation to Figures 50 through 55. Handle
portions
340', 320' and 350' are provided with the cassette to complete the
installation.
Referring to Figure 49, all of the components identified in relation to Figure
48
are present. The guide portions 330' are clearly shown to be installed within
the
openings 322' via the lead portion 330a' to ensure that the screen S' will be
guided within the channels S3' and H2' disposed with the sill S' and a header
H'
respectively. The leg portions 311e' and 311d' of the bracket 311' are clearly
seen
to retain the portion SX of the screen S' as the screen is paid out and
accumulated
on the roller 305'.
Referring now to Figures 48, 49 and particularly in relation to
Figures 50 through 55, the screen cassette C is assembled in a complete form
upon the brackets 311' having glides 330' provided therewith for installation
within the jamb section 10' having the generally arcuate shaped pocket P' as
best
seen in relation to Figure 48. The cassette C is oriented on an angle as shown
i n
Figure 50 in relation to the sill S' and the header H'. The sill includes a
supporting shelf S2' which will support the lower bracket 311' of the cassette
C.
The upper bracket 311' therefore is inserted to the position shown in Figure
51
within the void H1' so as to receive the entire upper bracket 311' in the void
H1'.
The bottom bracket of cassette C is then rotated about the top bracket in a
direction Z toward the sill portion S' so as to avoid the shelf portion S2'
and to
finally end up in a position as best seen in Figure 52 wherein the entire
upper
bracket 311' is disposed within the void H1' of the header H' while the lower
CA 02249147 1998-09-30
w - 56 -
bracket 311' and the glide 330' do not engage the portions of the sill portion
S' but
the entire cassette C is now disposed within the pocket P1' of the jamb
section 10'
in a parallel relationship thereto. The cassette is then moved downwardly i n
the direction illustrated so that the upper bracket 311' now enters the
arcuate
shaped pocket P1' of the jamb section 10' and the lower arcuate bracket 311'
rests
upon the shelf S2' while the glides 330' are contained within the channels S3'
disposed with the sill S' and within the channel H2' within the header section
H'. Gravity therefore keeps the arcuate bracket 311' in contact with the
arcuate
pocket P1' and secures the screen cassette C within the jamb section as is
also very
clearly seen in relation to Figure 54 which illustrates the screen being paid
out to
an operating position. Figure 55 illustrates the window assembly and the
screen
cassette without ghost lines to illustrate the esthetic appearance of the
entire
assembly. Standard framing sections for the header, sill and jambs may be
provided in order to simplify the construction of the window and improve its
appearance. It is also implied that the structure although illustrated with
respect
to a tilt and slide assembly would work equally well with any closure or
window
structure including for example but not limited to a double hung window , a
casement window, a door, or a patio door.
Referring now to Figures 64 and 65, there is illustrated in cross
section and perspective the preferred construction of the jamb framing section
including a pocket P' surrounded by pocket-forming sections 10a', 10b' and
10c'.
The section 10c' provides for the arcuate section of the pocket compatibly
shaped
with the arcuate portion A of the bracket 311' as seen in Figure 63.
Figures 66 through 69 describe exemplary structures for
2 5 combinations of the pocket and brackets. In Figure 66 the jamb section F1
includes a generally hexagonally shaped pocket J' within which is contained i
n
use the bracket B1 having a generally hexagonally shaped edge J compatible
with
the pocket J'. In Figure 67 in like manner, jamb section F2 includes a square
pocket K' for receipt of bracket B2 having a compatibly-shaped square edge K
for
CA 02249147 1998-09-30
_ 57 _
receipt in said pocket K'. Figure 68 includes a jamb section F3 and a bracket
B3
including a pocket L' and a bracket having a leading edge shape L compatible
with the pocket L' and describing arcuate portions described above in a
preferred
embodiment of the invention. Figure 69 illustrates a jamb section F4 having a
pocket generally in triangular shape M' for receipt of bracket B4 having a
generally triangular-shaped edge. These Figures 66 through 69 are by way of
example only. No limitations are implied. The essence is the compatibility of
the shape of the pocket with the compatibility of the leading edge of the
bracket.
All of the other limitations in manufacturing the cassette C are as
previously described unless stated above in relation to Figures 48 through 69.
The screen is manufactured in a similar manner from the same materials
having the same edges and characteristics.
As many changes can be made to the invention without departing
from the scope of the invention, it is intended that all material contained
herein
be interpreted as illustrative of the invention and not in a limiting sense.
