Note: Descriptions are shown in the official language in which they were submitted.
CA 02458913 2006-12-20
TITLE OF THE INVENTION
S [0001] SCREEN FRAME WITH INTEGRAL ROLL SCREEN COMPARTMENT AND
IMPROVEMENTS THEREOF
FIELD OF THE INVENTION
10002J This invention relates to improvements to screens for closure
assemblies and
in a preferred embodiment for patio doors, and windows.
BACKGROUND OF THE INVENTION
[00031 In the art there exists numerous devices which provide screening to
prevent
insects from entering open windows and patio doors. These screening devices
may
be placed in position within a channel provided with the frrsme sections of
typical
window or door assemb].ies with the screen frame of a predetermined thickness
so as
to easily fit within the channeI. Patio door screens may be slideable in a
channel on a
track assisted by roIlers and moveable to and from the position wherein the
screen
blocks the opening when the door is in the open position and prevents insects
from
entering the dwelling, to a position away from the opening wherein the screen
does
not block the opening.
[00041 More recently, roTl out screen assemblies have been provided which
include
after-market products which are permanently fixed in position an or near an
exterior
frame section adjacent to the door opening. At this position when desired the
screen
may be rolled out from its housing at a fixed position and extend across the
door
opening when the door is in an open position. The screen of course may be
accumulated on a roller in the housing and thereby provide the occupant with a
clear unobstructed view of their yard. But such a construction has di.fficulty
in
providing an adequate barrier to insects. They are unsightly and are also
costly and
may be beyond the level of skill for a homeowner installation.
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[0005] Other efforts therefore have been made to make roll screen
constructions
more invisible and yet functional. Such constructions may be found in
Applicant's
prior granted patent, United States Patent No. 6,267,168 which teaches the use
of a
roll screen cassette contained within a framing section of a closure assembly
which
provides guides in the header and sill frames for the leading edge of the roll
screen.
This construction improves the barrier against insects but raises other
issues.
Applicant is also aware of United States Patent No. 6,167,936 that addresses a
similar
concept. However, such hidden constructions do require that the window frames
be
manufactured to required specifications to include a void wherein the roll
screen
may be inserted. Conceptually these patents provide a valuable approach but in
one
respect from an economic standpoint they require that existing window
constructions be re-tooled for the required framing sections with the void for
the
hidden screen. Most manufacturers do not want to do this because of the cost
of
moulds and dies. There is therefore, still an unmet need yet unsatisfied which
provides a screen construction which does not require an extensive amount of
re-
tooling.
[0006] Attempts have been made to provide roll screen constructions within its
own
frame for fastening to an existing window or door frame; for example, United
States
Patent No. 5,479,979; United States Patent No. 6,082,432; and finally United
States
Patent No. 6,070,642. Particularly referring to United States Patent No.
6,070,642 as
by way of example, there is taught a roll screen assembly which has a support
frame
which is fixed into position with the upper member (30), as best seen in
Figures 1
and 2, including a compartment wherein the roll screen accumulates and pays
out.
The entire frame section therefore is fixed into position upon a typical frame
for a
door or a window which is adapted to the existing framing structure proximate
the
inner peripheral of the window or door frame. The roll screen frame is
permanently
fixed in position therefore and does not utilize any existing mounting
portions
available with the homeowner's windows or doors. Further in the case of a
patio
CA 02458913 2004-02-26
Page 3
door the roll screen frame does provide an obstacle at the threshold which
will be
discussed hereinafter.
[0007] Another example is found in such a fixed structure in relation to
United States
Patent No. 6,082,432 wherein the roll screen frame, as best seen in Figures 1
and 2, is
fixed in position and the roll screen is also fixed in position within the
chamber
compartment (40) on the brackets (41 and 46) wherein the screen pays out and
accumulates. The handle portion or as it is referred to in the patent, the
pulling
posts (25) extends across the frame portions (28 and 28b) which are
positicxned in
fixed relationship to span the door. Nothing within the reference teaches that
the
frame section supporting the roll screen may also move in relation to the door
in a
sliding motion as is with a typical planar screen door for a patio door (which
typical
screen does not include a roll screen component).
[0008] Some of the problems experienced with these prior art constructions
include,
with respect to the roll out doors, that a framing section is provided at the
threshold
of the assembly. This is true, for example, for screen doors manufactured by
the
Phantom Manufacturing Limited under the trademark "PHANTOM TM and by
Monroe Tool and Die, and/or KSG Products for "MIRAGE TM door screens.
Typically, these products resemble United States Patent No. 6,082,432 and
require
supplementary frame sections that extend around the door assembly which
provide
the obstacle adjacent to the threshold of the assembly. When the roll out
screen is
accumulated into the roll tube housing, the threshold remains as an obstacle
to block
the egress of an individual and particularly for those using wheel chairs,
walkers
and the like. People without particular challenges may simply step on the
threshold
obstacle and disform it to prevent the screen from rolling out and requiring
an
expensive repair. Further, such installations require expensive labour for
installation
and may be quite expensive in comparison to a typical sliding screen door
which is
not fixed in position.
_ ___... ._.,._. ,......~._~.r~,..
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[0009] When attempting to join the framing sectioxts for a conventional frame
such as
those described above, it is the convention to have mitre joints at 450 angles
on the
individual framing sections so that each section meets flush. These sections
are
attached to one another with the use of a"L" shaped connector or bracket. Such
a
joint is established and the adjacent sections being joined, as seen in
applicants own
United States Patent No. 6,701,994, must be cut to a predetermined angle to
attach
the frames proximate the mitre joints. This requires additional manufacturing
time.
Attempts have been made to overcome this deficiency by the use of comer
brackets
such as those disclosed in United States Patent No. 4,827,648. These corn.ers
however are intended for engagement with a planar member proximate slots
provided in the side members of the corner bracket. However they cannot be
used
to join adjacent frame sections.
[00101 Applicant is also aware of a product SCREEN AWAYTM for retractable roll
screen assemblies manufactured by Superior Building Products which provides
such
a device which includes approximately 18 to 24 parts and 22 steps involved in
assembling the kit of components provided. Although the product may be
esthetically pleasing once assembled, the threshold obstacle is evident which
must
be present to provide support for the leading edge of the roll screen as it
moves
across the opening.
10011] However, a typical known sliding screen frame, for iutstallation
adjacent a
patio door, when positioned across the patio door opening blocks the occupants
view of the yard and may be esthetically displeasing. If the screen door is
slld to the
opposite position away from the opening then the opposite glass pane is
obstructed
as well. 'Iypically ro11 screens have a retraction mechanism in the form of a
tensioned spring that biases the screen to the retracted positiorL Braking
detents
may be provided with a roll blind which engage and brake the mechailism
described
in United States Patent No. 4,188,992. However this construction is cambersome
and
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Page 5
bulky and provides no compatible simple braking surfaces separate from the
shaft
provided with a free wheeling bushing and compatible bracket.
[0012] United States Patent No. 5,099,906 teaches the use of a centri.fugal
clutch
based braking device that is mounted on the interior of the roll screen which
is
complicated to assemble and manufacture.
100131 United States Patent No. 4,188,992 above-mentioned also discloses a
centrifugally based braking system. This particular braking system is
ineffective for
vertically oriented screen rolls since the braking action forces are parallel
to the
screen roll itself and would be counteracted by gravity if mounted vertically.
[0014] Another cumbersome braking device for a horizontal system is disclosed
in
United States Patent 4,838,333.
[0015] Known roll screens as :in the case with the Applicant's prior
construction, that
pay out horizontally, are not guided in channels except at the ends of the
screen near
the handle. There are no means of retaining the edges of the screen cloth in
place
against the forces generated by the wind blowing on the screen. If the wind
forces
are high enough, this can cause release of the screen from the guide channel
that can
allow insects to pass. Attempts have been made to overcome this type of
problem by
providing bead like wind retaining devices attached at the edges of the screen
cloth
that are carried along a guide or groove contained within the frame. Though
solving
the problem of securing the motion of the screen at all sides of the framework
it
poses another problem in that the screen will not properly accumulate on the
roll.
That is it will not lie flat when accumulated and will tend to go out of
round.
Further if the beads do not release from the guide channel the screen cloth
may be
torn resulting in costly repairs occurring when greater forces than that of
the wind
such as the force of a pet jumping up against the screen. The screen should
easily
release from the guide channel and not be preventing from properly retracting.
_ _..__...~._..,.~ .
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[0016] One such example of an attempt to solve this problem is disclosed in
Unzted
States Patent No. 5,934,353. This solution is overly complicated and requires
gripping surfaces within a guide channel to engage the screen edge.
[0017] None of the prior art constructions identified above known to
Applicants
addresses the issue which Applicants' current invention focuses in upon. That
is
with all of the knowledge of those desi$ning roll out screen asseatblies which
are
bolted in place whether or not in a frame, none of the inventors including
Applicant's prior construction take advantage of the existing channels and
tracks
within windows and patio doors to allow for sftplicity of installation to
easily fit
within known constructions for windows and patio doors.
[00181 Applicant therefore is providing a roll screen frame cor-atruction,
which is
standardized at its perimeter to mate and interfit with well known channels,
tracks
and hardware and improvements thereof including braking mechanisms, wind
retainers, and xnitreless corners. In doing so the present roll screen design
malces
replacement and installation much simpler. In spite of the numerous efforts
made to
provide an acceptable roll screen for windows and doors there stiIl remains a
long
felt need left unaddressed in the art for a roll screen assembly artd
improvements
thereof which may be simply and easily installed by the homeowner. Nowhere
within the prior art is such a roA screen frame provided which may be
merchandized
as an OEM as well as an after-market product and which will fit the same
constraints
provided with windows and doors such as for example the well known planar
screen frame which slides in a track in a frame adjacent to a patio door.
These
paxticuIeu' known frames are inexpensive. Further nowhere in the art is there
taught,
a simplified braking system which is integrated into the ro11 screen assembly,
a
simple wind retainer for engaging the edges of the screen cloth at
predetermined
intervals, a mitreless joint for framing sections, and other components which
improve the performance of the ro31 screen of United States Patent No.
6,701,994,
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[0019] It is therefore a primary object of the invention to provide a roll
screen frame
construction, which is standardized at its perimeter to mate and interfit with
existing well known channels, tracks and hardware for windows and doors.
[0020] It is yet another object of this invention to provide a sliding screen
frame with
integral roll screen housing which frame may be slid across the opening of a
closure
frame and which frame is also used to support the free end of the roll out
screen as
well.
[0021] It is another object of the invention to make such a roll out screen
assembly
affordable.
[0022] It is yet a further object of the invention to provide a screen
assembly in a
fully assembled or alternative knock down kit form which is easy to assemble
and/or install.
[0023] It is yet a further object of the invention to provide a screen
assembly which
may be provided as a kit of components.
[0024] It is yet a further object of the invention to provide a wind retaining
device on
the edge of the screen portions cloth to assist with guiding the cloth to and
from the
retracted position without preventing the screen cloth from accumulating on
the
screen tube at the fully retracted position.
[0025] It is yet a further object of the invention to provide for a corner
bracket that
obviates the need for mitre joints when joining adjacent framing sections.
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[0026] It is yet a further object of the invention to provide a simple speed
control
braking device for the roll screen for substantial elimination of the
uncontrolled
hazardous rewinding on retraction of the roll screen.
[0027] It is yet a further object of the invention to provide a screen
assembly which is
cost effective.
[0028] It is yet a further object of the invention to provide a torque tube
designed to
improve the interfit thereof with both a screen tube and a support bracket,
and
further provide braking elexnent guides therewith.
[00291 It is still another object of the invention to provide a bracket for
carrying both
the screen tube and for assembling the screen frame, which provides housing of
a
speed control braking systeYn.
[00301 Further and other objects of the invention will become apparent to
those
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
[0031] Reference to a roll screen assembly within this specification is to be
defined as
also including any screen construction which pays out from and returns to a
housing
whether a roll screen installed with or without a roll tube, or whether the
screen is
pleated in an accordion like fashion or the like or any other similar screen
construction without limitation. When the term screen is utilized its is
intended that
other matrices such as shades, blinds, and screens whether transparent ,
opaque,
mesh or the like is implied without limitation.
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[0032] According to a primary aspect of the invention there is provided a
sliding
screen frame for a closure assembly having an opening and an existing track
for
mounting a screen, said screen frame comprising framing sections having an
outer
side edge and an inner side edge, and a screen housing from which a screen is
payed
out and accumulated, said framing sections being adapted proximate the outer
side
edge to interfit with a the existing track of the closure assembly to enable
the sliding
screen frame to slide across the opening of the closure assembly and the frame
sections also being adapted proximate the inner side edge thereof to support
and
guide the free end of the screen between a fully payed out and a fully
accumulated
position, further comprising either
(i)a mitreless corner connector having a generally "L" shaped member including
two perpendicular legs extending from a central box shaped part, said
connector
for connecting adjacent framing sections without the need for mitre cuts
thereof and
said box shaped part for butting with the adjacent framing sections when
joined to
said connector to establish continuity with the adjacent edges of said
sections.
or
(ii) a speed control braking assembly, for a rotating hollow shaft for
accommodating
said screen, and to impede rotation of said shaft at a predetermined speed,
said
assembly having a centrifugal braking element, a bracket containing said
element
coupled to said shaft, a friction member disposed with said bracket, a
freewheeling
torque tube coupled to said bracket and said shaft for controlling motion of
said
braking element, wherein at low speed there is effectively no resistance to
rotation of
the shaft but at a predetermined speed the shaft speed is controlled when the
braking element is moved by centrifugal force to engage said friction part to
thereby inhibit motion of said shaft.
[0033] Any framing sections may be joined together by the mitreless corner
bracket,
each section is cut at substantially ninety degrees proximate each end to
interfit with
the corner bracket which is preferably generally "L" shaped including legs
adapted
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to engage the adjacent frame sections. The corner bracket may be used to form
a
mitreless joint for any adjacent frame sections.
[0034] Therefore according to yet another aspect of the invention there is
provided a
mitreless corner connector comprising a generally "L" shaped member including
two perpendicular legs extending from a central box shaped part, said
connector for
connecting adjacent framing sections without the need for mitre cuts thereof
and
said box shaped part for butting with the adjacent framing sections when
joined to
said connector to establish continuity with the adjacent edges of said
sections.
[0035] According to yet another aspect of the invention there is provided a
screen
frame for a closure assembly having an existing track for mounting a frame,
said
screen frame comprising framing sections and a housing for paying out and
accumulating a screen, said framing sections having an inner and outer side
edge,
said inner side edge including guides provided therewith, the screen being
moveable in said guide of the inner side edge of the framing sections between
a fully
extended position, whereat the screen is substantially payed out from said
housing,
and a fully retracted position within the housing; said framing section also
being
adapted, proximate the outer side edge thereof to engage with the existing
track
disposed with the closure assembly whether the screen is at the fully extended
or the
fully retracted position, further comprising either:
(i) a mitreless corner connector having a generally "L" shaped member
including
two perpendicular legs extending from a central box shaped part, said
connector
for connecting adjacent framing sections without the need for mitre cuts
thereof and
said box shaped part for butting with the adjacent framing sections when
joined to
said connector to establish continuity with the adjacent edges of said
sections.
or
(ii) a speed control braking assembly, for a rotating hollow shaft for
accommodating
said screen, and to impede rotation of said shaft at a predetermined speed,
said
assembly having a centrifugal braking element, a bracket containing said
element
CA 02458913 2004-02-26
Page 1.1
coupled to said shaft, a friction member disposed with said bracket,a
freewheeling
torque tube coupled to said bracket and said shaft for controlling motion of
said
braking element, wherein at low speed there is effectively no resistance to
rotation of
the shaft but at a predetermined speed the shaft speed is controlled when the
braking element is moved by centrifugal force to engage said friction part to
thereby inhibit motion of said. shaft.
[0036] According to yet another aspect of the invention there is provided a
sliding
screen frame for a closure assembly having an opening and an existing track
for
mounting a screen, said screen frame being moveable between a position wherein
the screen frame blocks the opening to second position wherein one is able to
pass
through the opening,
said screen frame comprising framing sections having an inner and outer side
edge
and a screen housing from which a screen is accumulated and payed out, said
framing sections being adapted proximate the inner side edge to support and
guide
the free end of the screen, and the outer side edge being adapted to engage
with the
existing tracks of the closure assembly, wherein said screen is moveable
across the
screen frame from an accumulated position within the housing, to a fully payed
out
extended position, the free end of the screen riding within the inner side
edgeof the
framing section, said screen frame being moveable to and from a position
blocking
said opening as said outer side edge of the framing section engages the
existing track
of the closure assembly, further comprising either
(i)a mitreless corner connector having a generally "L" shaped member including
two
perpendicular legs extending from a central box shaped part, said connector
for
connecting adjacent framing sections without the need for mitre cuts thereof
and
said box shaped part for butting with the adjacent framing sections when
joined to
said connector to establish continuity with the adjacent edges of said
sections.
or
(ii) a speed control braking assembly, for a rotating hollow shaft for
accommodating
said screen, and to impede rotation of said shaft at a predetermined speed,
said
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assembly having a centrifugal braking element, a bracket containing said
element
coupled to said shaft, a friction member disposed with said bracket, a
freewheeling
torque tube coupled to said bracket and said shaft for controlling motion of
said
braking element, wherein at low speed there is effectively no resistance to
rotation of
the shaft but at a predetermined speed the shaft speed is controlled when the
braking element is moved by centrifugal force to engage said friction part to
thereby inhibit motion of said shaft.
[0037] According to yet another aspect of the invention there is provided a
retainer,
(preferably a wind retainer), for installation adjacent the edge of a screen
cloth and
to guide the motion of said screen cloth in a channel in the track of a screen
assembly, said retainer comprising a head part extending away from the edge of
said
screen cloth and two flange parts extending from said head part at
substantially
ninety degrees, and capturing there-between the screen cloth which is fastened
thereto, said retainer allowing the screen cloth to roll up flat when
retracted and
does not allow the accumulated screen to go out of round in doing so.
Preferably the
retainer is heat welded to the screen cloth.
[0038] In a preferred embodiment the screen cloth of the screen assembly
includes a
wind retainer portion proximate the edge thereof for engaging the guide
channels
within which the free end of the screen is guided, said wind retainer being
fastened
to the screen cloth and providing a guide part extending outwardly there from
for
engaging the guide channel. Preferably said guide part is flexible and may be
released from the guide channel when subjected to a predetermined force.
[0039] According to yet another aspect of the invention there is provided a
sliding
screen frame for a closure assembly including an opening and having an
existing
track for mounting a screen, said screen frame comprising framing members
connected with a roll out screen housing, said framing members having an inner
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and an outer side edge and being adapted proximate the outer side edge to
allow
said screen frame to slide across the closure assembly opening, said framing
members also being adapted proximate the inner side edge thereof to support a
free
end of a roll screen to and from a payed out position, further comprising
eithe:r
(i)a mitreless corner connector having a generally "L" shaped member including
two perpendicular legs extending from a central box shaped part, said
connector
for connecting adjacent framing sections without the need for mitre cuts
thereof and
said box shaped part for butting with the adjacent framing sections when
joined to
said connector to establish continuity with the adjacent edges of said
sections.
or
(ii) a speed control braking assembly, for a rotating hollow shaft for
accommodating
said screen, and to impede rotation of said shaft at a predetermined speed,
said
assembly having a centrifugal braking element, a bracket containing said
element
coupled to said shaft, a friction member disposed with said bracket, a
freewheeling
torque tube coupled to said bracket and said shaft for controlling motion of
said
braking element, wherein at low speed there is effectively no resistance to
rotation of
the shaft but at a predetermined speed the shaft speed is controlled when the
braking element is moved by centrifugal force to engage said friction part to
thereby inhibit motion of said shaft.
[0040] According to yet another aspect of the invention there is provided a
screen
frame for a closure assembly having an existing track, said screen frame
compriising
framing sections and a screen housing, each section including, an inner
portion
adapted as a support and guide for the free end of a screen payed out from
said
screen housing, and an outer portion adapted to engage with the existing track
of
the closure assembly whether the screen is at a fully payed out or a fully
accumulated position, wherein said screen frame may be installed in the
existing
track of the closure assembly without the need of tools, further comprising
either
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(i)a mitreless corner connector having a generally "L" shaped member including
two perpendicular legs extending from a central box shaped part, said
connector
for connecting adjacent framing sections without the need for mitre cuts
thereof and
said box shaped part for butting with the adjacent framing sections when
joined to
said connector to establish continuity with the adjacent edges of said
sections.
or
(ii) a speed control braking assembly, for a rotating hollow shaft for
accommodating
said screen, and to impede rotation of said shaft at a predetermined speed,
said
assembly having a centrifugal braking element, a bracket containing said
element
coupled to said shaft, a friction member disposed with said bracket, a
freewheeling
torque tube coupled to said bracket and said shaft for controlling motion of
said
braking element, wherein at low speed there is effectively no resistance to
rotation of
the shaft but at a predetermirted speed the shaft speed is controlled when the
braking element is moved by centrifugal force to engage said friction part to
thereby inhibit motion of said shaft.
[0041] According to yet another aspect of the invention there is provided a
sliding
screen frame comprising frame members including an integral roll out screen
housing, said frame members being adapted to allow said frame to slide across
a
closure frame as well as providing a support for the free end of the roll out
screen.
In one embodiment said frame includes rollers or wheels preferably located
proximate the top and/or bottom of the frame to assist with the sliding motion
of the
screen frame across the closure frame opening. Preferably the rollers or
wheels are
included with a support bracket for supporting the roll screen in said
housing. In
one embodiment the preferred bracket may also include a section to engage the
frame member proximate the corners to assemble the members into the screen
frame
and to house the roller for rriovement on the track of header and sill of the
closure
assembly. Preferably the bracket also includes supports within the brackets
opposite
the rollers or wheels to engage the roll tube of the roll screen. In yet
another
embodiment the bracket may further comprise a speed control braking system
CA 02458913 2004-02-26
Page 15
housed within an opening disposed about the roll tube support, wherein
centrifugal
braking elements are provided and a braking surface such as an "0" ring,
preferably
said braking elements being retained in position by guides provided with a
free
wheeling torque tube engaged with the support of the bracket, and with the
roll
tube. Preferably cut outs are provided as guides for the brake elements in a
collar
disposed with said torque tube, which guides engage detents disposed with said
braking elements.
[0042] It is not necessary in all embodiments that the screen frame be
slideable
within conventional constructions such as channels, tracks, and the like. The
essence
of the invention is therefore that the screen frame includes framing sections
and a
screen housing, and that eac:h section includes an inner portion adapted to be
used
as a guide for the free end of the screen and an outer portion adapted to
engage with
and in one embodiment slide in the preferred existing channel, track or
hardware
disposed with closure assembly whether the screen is at the fully extended or
the
fully retracted position.
[0043] The invention therefore also includes a frame member for a screen frame
including a housing from which a screen is payed out and accumulated, said
member comprising a first portion adapted for engagement with, preferably
conventional existing, window and door frame hardware, channels, tracks and
the
like; and a second portion adapted to guide the free end of the screen,
further
comprising either
(i)a mitreless corner connector having a generally "L" shaped member including
two perpendicular legs extending from a central box shaped part, said
connector
for connecting adjacent framing sections without the need for mitre cuts
thereof and
said box shaped part for butting with the adjacent framing sections when
joined to
said connector to establish continuity with the adjacent edges of said
sections.
or
CA 02458913 2004-02-26
Page 16
(ii) a speed control braking assembly, for a rotating hollow shaft for
accommodating
said screen, and to impede rotation of said shaft at a predetermined speed,
said
assembly having a centrifugal braking element, a bracket containing said
element
coupled to said shaft, a friction member disposed with said bracket, a
freewheeling
torque tube coupled to said bracket and said shaft for controlling motion of
said
braking element, wherein at low speed there is effectively no resistance to
rotation of
the shaft but at a predetermined speed the shaft speed is controlled when the
braking element is moved by centrifugal force to engage said friction part to
thereby inhibit motion of said shaft.
(0044] Therefore, to these ends according to another aspect of the invention,
there is
provided a kit of components for a screen frame comprising framing members, a
screen housing, and a screen contained in and payed out from said housing,
said
framing members being firstly adapted engage with, preferably conventional
existing, window and door frame hardware, channels, tracks and the like; and
also
being adapted to guide the free end of the screen. The first adaptation of the
frame
members is to provide engagement of the screen frame of the present invention
with
known constructions which presently engage known screens for doors, windows
and patio doors, 1) such as a typical rail used with patio doors which
includes a rail
or the like which engages a sliding mechanism, usually a roller; or 2) such as
a
typical lift out screen arrangement for windows including a generally u-shaped
flange for acceptance of a screen frame; or 3) such as a typical casement
screen
channel with engagement pins which are rotated out of position to allow screen
removal; wherein the present invention is unlike the prior art constructions
not
permanently attached which can be readily replaced and attached by a home
owner.
Therefore a kit of components may be provided which includes the framing
sections
and the housing and roll screen which may be assembled to provide the above-
mentioned screen frame. Of course the screen frame may also slide which has
been
described above. This however, is not absolutely necessary. The need that is
being
CA 02458913 2004-02-26
Page 17
satisfied is that the present invention allows for replacement of existing
screens
using the same channels, rails and/or hardware provided for existing
asseinblies
wherein the present invention is adapted to fit those channels, rails and/or
hardware allowing the home owner the ease of installation without providing
the
requirement of an expensive installer and retro fitted parts.
[0045] In yet another embodiment there is provided kit of components for
assembly
of a screen frame comprising framing sections, a screen housing, and a screen
accumulated and payed out from said housing, said framing sections being
adapted
to engage existing tracks of a closure assembly and also being adapted to
guide and
support the free end of the screen as it is payed out and accumulated from
said
screen housing,further comprising either
(i)a mitreless corner connector having a generally "L" shaped member including
two perpendicular legs extending from a central box shaped part, said
connector
for connecting adjacent framing sections without the need for mitre cuts
thereof and
said box shaped part for butting with the adjacent framing sections when
joined to
said connector to establish continuity with the adjacent edges of said
sections.
or
(ii) a speed control braking assembly, for a rotating hollow shaft for
accommodating
said screen, and to impede rotation of said shaft at a predetermined speed,
said
assembly having a centrifugal braking element, a bracket containing said
element
coupled to said shaft, a friction member disposed with said bracket, a
freewheeling
torque tube coupled to said bracket and said shaft for controlling motion of
said
braking element, wherein at low speed there is effectively no resistance to
rotation of
the shaft but at a predetermined speed the shaft speed is controlled when the
braking element is moved by centrifugal force to engage said friction part to
thereby inhibit motion of saicL shaft.
[0046] In another embodiment there is provided a screen frame construction for
a
closure assembly comprising framing sections having an inner and outer side
edge,
CA 02458913 2004-02-26
Page 18
and a screen housing from which a screen is payed out and accumulated, said
frame
sections being adapted proximate the outer side edge to interfit with existing
tracks
of the closure assembly, and said framing sections being adapted proximate the
irmer side edge to support and guide a screen as it is payed out from the
housing,
further comprising either
(i)a mitreless corner connector having a generally "L" shaped member including
two perpendicular legs extending from a central box shaped part, said
connector
for connecting adjacent framing sections without the need for mitre cuts
thereof and
said box shaped part for butting with the adjacent framing sections when
joined to
said connector to establish continuity with the adjacent edges of said
sections.
or
(ii) a speed control braking assembly, for a rotating hollow shaft for
accommodating
said screen, and to impede rotation of said shaft at a predetermined speed,
said
assembly having a centrifugal braking element, a bracket containing said
element
coupled to said shaft, a friction member disposed with said bracket, a
freewheeling
torque tube coupled to said bracket and said shaft for controlling motion of
said
braking element, wherein at low speed there is effectively no resistance to
rotation of
the shaft but at a predetermined speed the shaft speed is controlled when the
braking element is moved by centrifugal force to engage said friction part to
thereby inhibit motion of said shaft.
[00471 According to yet another aspect of the invention there is provided a
support
bracket for a roll screen which comprises a support for said roll screen
proximate
one end of the bracket and an integral mounting part for a roller or wheel
proximate the other end of the bracket. In another embodiment of the invention
there is provided a support bracket for a roll screen having two ends
comprising a
support for said roll screen proximate one end of the bracket and also
including a
section to engage the framing members proximate the corners of the screen
frame to
assemble the members into the screen frame, further comprising a speed control
braking assembly, for a rotating hollow shaft for accommodating said roll
screen,
CA 02458913 2004-02-26
Page 19
and to impede rotation of said shaft at a predetermined speed, said assembly
having
a centrifugal braking element, the bracket containing said element and being
coupled to said shaft proxiixtate said support, a friction member disposed
with said
bracket, a freewheeling torque tube coupled to said bracket proximate said
support
and to said shaft remote said support, said tube for controlling motion of
said
braking element, wherein at low speed there is effectively no resistance to
rotation of
the shaft but at a predetermined speed the shaft speed is controlled when the
braking element is moved by centrifugal force to engage said friction part to
thereby
inhibit motion of said shaft.
[0048] Preferably the bracket may be made from nylon, plastic, Delrin or the
like.
[0049] In yet another embodiment the bracket may further comprise a speed
control
braking system housed within an opening disposed about the roll tube support
wherein centrifugal braking elements are provided and a braking surface such
as an
"0" ring, preferably said braking elements being retained in position by
guides
provided with a free wheeling torque tube engaged with the support of the
bracket,
and with the roll tube. Preferably cut outs are provided as guides for the
brake
elements in a collar disposed with said torque tube, which guides engage
detents
disposed with said braking elements.
[0050] In stiIl yet another embodiment there is provided a speed control
braking
assembly for a rotating hollow shaft to impede rotation of said shaft at a
predetermined speed, said assembly comprising a centrifugal braking element, a
housing for said element coupled to said shaft, a friction member disposed in
said
housing, a freewheeling torque tube coupled to said housing and said shaft for
controlling motion of said braking elements, wherein at low speed there is
effectively no resistance to rotation of the shaft but at a predetermined
speed the
shaft speed is controlled when the braking element is moved by centrifugal
force to
engage said friction part to thereby inhibit motion of said shaft.
CA 02458913 2004-02-26
Page 20
[0051] According to yet another aspect of the invention there is provided a
sliding
screen frame for a closure assembly having an opening and an existing track
for
mounting a screen, said screen frame comprising header, sill and two jamb
framing
sections, said framing sections being connected to one another to form a frame
by the
use of a mitreless corner connector, said framing sections having an outer
side edge
and an inner side edge, and a screen housing from which a screen is payed out
and
accumulated, said framing sections being adapted promixate the outer side edge
to
interfit with the existing track of the closure assembly to enable the sliding
screen
frame to slide across the opening of the closure assembly and the frame
sectioris also
being adapted proximate the inner said edge thereof to support and guide the
free
end of the screen between a fully payed out and a fully accumulated positior-,
said
mitreless corner connectors comprising a first detent for connecting to
adjacent
framing sections (preferably a first leg) and a second detent for connecting
to the
other adjacent framing section (preferably a second leg) said two detents
being
sufficiently spaced from one another to obviate the need for a miter joint
when
joining said framing sections. In a preferred embodiment the screen cloth of
the
screen assembly includes a wind retainer portion proximate the edge thereof
for
engaging the guide channels within which the free end of the screen is guided,
said
wind retainer being fastened to the screen cloth and providing a guide part
extending outwardly there from for engaging the guide channel. Preferably said
guide part is flexible and may be released from the guide channel when
subjected to
a predetermined force.
[0052] Preferably the screen assembly includes a centrifugal braking system
for
impeding the uncontrolled retraction for the roll screen preferably,
comprising a
speed control braking system housed within an opening disposed about the roll
tube
support wherein centrifugal braking elements are provided and a braking
surface
such as an "0" ring, preferably said braking elements being retained in
position by
guides provided with a free wheeling torque tube engaged with the support of
the
_ ,....___.. .
CA 02458913 2004-02-26
Page 21
bracket, and with the roll tube. Preferably cut outs are provided as guides
for the
brake elements in a collar disposed with said torque tube, which guides engage
detents disposed with said braking elements.
[0053] Preferably there is provided a torque tube for fastening to a hollow
shaft
proximate one end and for engaging a support bracket for the hollow shaft at
the
other, wherein the torque tube is free wheeling on said support bracket, said
tube
having a substantially "Z" shaped flange to interconnect the part for engaging
the
hollow shaft with the part engaging the support bracket, wherein said "Z"
shaped
flange permits flexing of the torque tube to accommodate a predetermined
variation
in the hollow of said hollow shaft and wherein the torque tube tightens if
efforts are
made to separate the shaft and the torque tube (preferably providing for .010
inch
variation in the hollow shaft dimension.)
[0054] The framing members may be formed from nylon, plastic, steel, aluminum,
fiberglass, PVC or the like by any conventional method including roll forming,
pultrusion, extrusion, CNC fabrication, with no limitation being implied
whatsoever.
[0055] In yet another aspect of the invention, the flexible wind retainer
previously
described does not interfere with the retraction of th.e screen, said wind
retainer
including a guide part and having extending there from and perpendicular
thereto,
two thin flanges which capture the screen cloth and which are secured to said
cloth
by welding by heat, ultra sound, or the like; said thin flanges being
sufficiently thin
so as not to prevent the smooth retraction of the screen cloth on the roll
tube or to
impede the paying out thereof. Preferably the wind retainer is positioned at
intervals along each edge of the screen cloth so as to provide further guides
of the
screen with the handle part. In this way the screen cloth will not go out of
round,
and will roll up flat when accumulated on the screen tube.
CA 02458913 2004-02-26
Page 22
[0056] When the term conventional and or existing hardware , channels, tracks
or
the like is used in this specification with reference to the various aspects
of the
invention described above it is implied that such hardware, channels, and
tracks are
utilized to secure existing planar screens found in windows, doors, patio
doors and
other closure assemblies whether existing, replacement or original assemblies
such
as but not limited to tilt and slide windows, casement windows, double hung
windows, awning windows, pivoting doors, and patio doors. Further it is
intended
that the screen assembly of the various embodiments of the invention may be
easily
and simply placed or dropped into position with a minimum of effort without
requiring fastening in position with the exception of rotating or retracting a
holding
pin or the like or making a tension adjustment to the roller. Conventionally
hardware channels and/or tracks or the like are located with the various
assemblies
discussed above to allow this simple installation. The homeowner can therefore
use
conventional existing hardware for installation of the various embodiments of
the
present invention or alternatively if desired can provide replacement hardware
which may be of any compatible shape or configuration or which may engage the
conventional hardware or alternatively may replace it. Simplicity of
replacement or
installation is the key for our screen assembly.
BRIEF DESCRIPTION OF THE DRAWINGS
[0057] Figure 1 is a perspective view of the frame section in a patio door
illustrated
in a preferred embodiment of the invention.
[0058] Figure 1A is a similar view to that of Figure 1 for a window assembly.
[00591 Figures 2 and 2A are exploded perspective views of the frame section of
Figure 1 and 1A.
.. . ._ _. . _._ ,. _...._..... ............._ .... .......,,., r
,.~.........,....M. . ....:.,.~~ ,.. ::.;n,,rn ,,.n-.,.~.__.:,,.....,.. .. .
....... ......,,...-e..,:,,,e~. ~7xw m,.n:;,qm~.~.'.. ,_....
_.'.._..,..._....... ....._..... ..w-. ... . _ .... .. . .. . .. _..____.._~.
, .., ..... .,.....w. .*,.,..,. ,.-'~".,
CA 02458913 2006-12-20
Page 23
[0060] Figures 3 and 3A are cross sectional views of the frame seci3or 13 and
113 of
Figures 1 and 1A illustrated in preferred embodiments of the invention.
[0061] Figures 4 and 4A are perspective views of the sections of Figures 3 and
3A.
S
[0062] Figure 5 is a cross sectional view of the cover portion (14)
iIlustrated in
Figures T and 1A.
[0063] Figures 6, 7, 8 and 9 and 6A, 7A, 8A, and 9A are top and bottom front
and rear
perspective views of the bracket portions (22) and (122) as seen in Figures 2
and 2A
and illustrated in preferred embodiments of the invention.
[0064] Figures 10 and 10B are cross seclionai views of the screen assembly of
Figures
1 and lAproviding details with respect to the operation thereof and
iIlustrated in
preferred embodiments of the invention.
100651 Figures 10A and 10C are close up cross sectional views of the bottom
end of
Figures 10 and 1Ub indicating the details thereof.
[0066] Figures 11 and 11I7 are partially exploded schematic views of the
assembly of
Figures 1 and 1A illustrated in preferred embodiment of the invention.
[0067] Figure 11A is a frxrther exploded schematic view of Figure 1.
[0068] Figures 11B and 11E are substantialIy totally exploded schetnafic views
of the
assembly of Figures 1 and 1A.
[0069] Figure 12 A, B, C, D are a series of prior art hardware and planer
screert
schematic views for various closure assemblies.
CA 02458913 2006-12-20
Page 24
[0070] Figure 13 A,13, C, D are a series of schematic vYews of various
embodizxwnts of
the invention in engagement with similar hardware to that of Figure 12 but
incorporating Applicants' invention.
[0071] Figure 14 is a schematic view indicating the manner in which the screen
is
attached to the handle and the tube illustrated in one embodiment of the
invention.
[0072] Fig. 15 is an exploded perspective view of an improved embodiment of a
roll
screen assembly ineoxporating a wind retainer and a mitreless corner
connector, and
illustrated in a preferred embodiment of the invention.
I00731 Fig. 16 is an exploded perspective view of the components of the roll
screen
assembly and bracket asaeembly illustrating the detaia of the centrifugal
braking
system, and illustrated in a preferred einbodiment of the invention.
[0074] Fig 17 is an exploded view of the bracket assembly, of Figure 16,
illustrating
the assembly of the centrifugal braking system illustrated in a preferred
embodiment
of the invention.
[0075] Fig 18 A, B, C, I7 are views of the bushing of Figure 17 used to
connect the ro11
screen to the bracket, and provide top, bottom, side, and cutaway views of the
braking system thereof illustrated in a preferred embodiment of the invention.
[0076] Fig 19 A, B, C, D, E are perspective, top and bottom views of the
braking
element used in the centrifugal braking system and illustxated in a preferred
embodiment of the invention.
[0077] Fig 20 A, B, C, D, F, P are top, bottom, perspective, side, and end
views of the
body of the bracket, illustrated in a preferred embodiment of the invention.
CA 02458913 2004-02-26
Page 25
[0078] Fig 21 A, B, C, D are end, top, and side perspective views of the
mitreless
corner connector for attaching the various framin.g element to one another and
illustrated in a preferred embodiment of the invention.
[0079] Fig 22A, and B are perspective views of the flexible wind retainer for
attachment to the screen cloth, and illustrated in a preferred embodiment of
the
invention.
[0080] Fig 23 is a top schematic view of the roll screen with attached wind
retainers
showing the accumulation of the screen and the wind retainers when the screen
is in
a retracted positioned illustrated in a preferred embodiment of the invention.
DETAILED DESRIPTION OF THE INVENTION
[0081] Although the following description focuses on a patio door screen, it
is not
intended that the invention be limited in this aspect. The invention also rnay
be
embodied with other doors, windows, or the like. Those skilled in the art will
recognize these other uses without limitation.
[0082] Referring generally to the figures, there is illustrated a screen frame
assembly
(10) which includes a screen housing (14) and frame sections (11, 12, and 13)
making
up the frame (10). The assembly (10) slides within an opening of a closure
assembly
such as a patio door. The sliding action of the screen frame (10) is
accomplished by
sliding the screen frame along the edges (11b and 13b) within tracks or
channels
normally found within a patio door assembly. These channels are found in the
sill
and the header of the door assembly. The screen frame (10) therefore moves as
is
known in prior art sliding constructions. However, integral with the framing
section
(10) is a compartment (15) within which is found a spring biased roll screen
assembly. As best seen in Figure 2, the leading edge (31) of the screen (30)
travels
within the inside edges (13a and 11a) of the frame portions (11 and 13) to and
from a
.._.._ ..,.e.r::. .., m, . ~_,,.. rc . .,., . ,._.,.._.. w_, .. __ _._... N.,.
a...... _._ .___ _..,____.. --..._ _ . _ _.._._...-~
. _ . ....___.~___
CA 02458913 2004-02-26
Page 26
fully accumulated position wherein the screen is accumulated on the roll tube
which
will be described hereinafter, to a fully extended position wherein the
leading edge
(31) is located proximate the channel portion (12a) adjacent the interior of
section
(12) which screen edge (31) may be latched and/or locked in position. Whether
the
screen (30) is at the fully accumulated or the fully extended position, the
entire
screen assembly (10) may be slid across the patio door opening. In this
manner, the
screen is slid out of a position where it might block the threshold to an
occupant.
This allows passage of wheel chairs, walkers and the like in a simple manner
and
overcomes one of the problems in the art.
[0083] As best seen in Figure 3 and 4 the portion (13b) of section (13) has
opening (b)
therein to be received in standard sized channels or rails provided in the
sill and
header frames of the track assembly. The leading edge of the screen (31) will
slide or
be guided via guide (G) within the section (13a) within channel (a) thereof as
described above and hereinafter to assist motion of the leading edge (31) of
the
screen (30).
[0084] Rollers (R) may be provided with the brackets (21 and 20) at mounting
slots
(20d) and (21d) which rollers travel within the sill track. They also may be
provided
for brackets (22) and (23) for the header. The bracket portions (20, 21, 22
and 23) also
provide channel portions (20a, 21a, 22a and 23a) which marry within the track
portions of the closure assembly and which assist with the assembly of the
screen
frame 10. As seen in Figure '11a leg portions (d) and (f) for brackets (20 and
22) and
(21 and 23) respectively interfit in channels (b), (d') and (b) respectively
to assemble
the frame sections (11, 12 and 13) with the housing (14). The brackets also
provide
extensions for example, track portion (13b) and providing a channel (b) to
receive the
track disposed within the sill and header of the rails normally provided. The
roller
(R) therefore is spring biased as is known to accommodate various tensions.
Release
pins may be provided, as is known, within the legs of brackets (21 and 23) to
allow
installation and replacement of the screen frame in a similar manner as
conventional
CA 02458913 2004-02-26
Page 27
planer screen frames, which are known in the art. The brackets (22 and 20)
support
the roll screen assembly (S) therebetween mounted on a tube. The tube has a
slot in
it to receive one end of the screen with the other end of the screen being
proximate
the exit from the tube housing (15) as best seen in Figure 14 at (15c). The
brackets (20
and 22) as best seen in Figures 6, 7, 8 and 9 have holes therein for aligning
with holes
(y) within the housing (14) to align the portion (22z) with portion (15b) and
receipt of
threaded screws. The mouth (15c) therefore of the cover (15) allows foi the
free end
(31) of the screen assembly (30) to extend therefrom. Locking portions (22c)
provide
locking of the roller tube in position.
[0085] When fully assembled the screen assembly (10) therefore can replace an
existing sliding screen utilizing the same channels of the existing patio
door.. This
enables the homeowner to effect the replacement without the need for an
experienced installer or add on supplementary components. No assembling is
required. The screen assembly 10 merely drops into the existing channels.
[0086] As can be seen from the Figures, the present invention resembles the
well-
known prior art sliding patio door screen in that it may be slid from a
position -where
it fully covers the door opening to a position where it does not. However, it
clearly
has the added advantage in that the screen may be accumulated on the roller
when
the entire frame is at the first position so that it does not block the view
of the
occupants when the patio door is in fact closed. However, when the patio door
is
open, the roll screen may be extended to the fully extended position and
latched
thereat so as to prevent insects from entering the dwelling. However, when an
occupant wishes to exit the dwelling, the patio screen assembly (10) may be
shd in a
conventional manner so as to not obstruct the threshold as is the case with
prior art
structures discussed in the background of the invention. The framing sections
(11,
12, 13 and 14) may be made from aluminum extrusions or the like, and the
brackets
(20, 21, 22 and 23) may be manufactured from nylon or other resins. Section 14
may
be an aluminum extrusion as well.
CA 02458913 2004-02-26
Page 28
[0087] The entire assembly may be provided in a kit of components wherein all
of
the framing sections (10, 11, 12, 13 and 14), brackets (20, 21, 22 and 23)
housing (14)
and the roller screen assembly may be provided in the kit which may be easily
assembled. When compared to the prior art constructions of PHANTOMTM or
MIRAGETM, instead of the typical 22 steps in order to provide such a prior art
construction which typically is done by an expensive installer, the present
roll out
screen will be marketed for substantially the same price as the well-known
steindard
sliding planer screens in various consumer outlets and may be used to replace
standard screens when they are in need of repair.
[00881 Further Applicants may utilize the flexible screen connectors of Figure
14 in
the screen assembly (10) as taught in its prior patent technology referenced
above,
using a roll tube having a compatible detent therein and handle portion having
compatible detent therein for receiving the flexible T-shaped connector at
each end
of a screen cloth which may therefore may accommodate easy screen replacement.
It
is required that the same dimensions (length, width and thickness) be utilized
for the
threshold and header track engaging framing portions (11 and 13) as those
whi.ch are
standard at the present date. This will allow for easy replacement of the
conventional planer screen with the present invention. As is taught in
Applicant's
prior invention the tube may be tensioned by the means as disclosed therein.
[0089] Referring now to Figure 10, 10a, 11, 11a, llb, and 14 there is
illustrated the
assembly (10) of Figure 1 engaging top rail (RT) bottom rail (RB) proximate
the top
thereof (L). Conveniently therefore the sections (11) and (13) are provided
having
openings or channel sections as best seen in Figures 3 and 4 at (11a) and
(11b) and
(13a) and (13b) which as best seen in Figure 11 defining the top and bottom
sections
of the screen assembly (10) which now includes the housing for the roll out
screen
(S) and the frame sections (11) and (13) which includes an upper and a lower
section
or profile (11a) and (11b), (13a) and (13b) respectively. The inside portions
(11a) and
. .. ... ._ ._._... ......... .... u.., , ~ .. . __.....,.a
_..... _.~_. _
~...
CA 02458913 2004-02-26
Page 29
(13a) are for the receipt of the legs (d) and (f) of the brackets (20, 21, 22
and 23) to
close the frame sections and integrate the entire assembly by attaching the
housing
and roll screen thereto. Clearly, as can best be seen in Figure 10A the roller
(R)
engages the rail (RB) proximate the top thereof (L) in a conventional manner,
said
roller being provided with the brackets (21 and 20) and preferably (23 and 22)
as
previously described in relation to Figure 2. The patio screen assembly (10)
will
therefore be free to roll upon the rails (T, R and B) in a conventional
manner.
However, the sections (11 and 13) also include sections (13a and 11a) for
receipt of
and the carriage of the guide (G) for the handle (H) of the screen assembly
accumulated on the tube (T) advanced via handle (H) to the guides (11a and
13a) to
proximate the section opening of (12a) where at the handle may be latched. The
latch is not illustrated nor described and would be as is known. The brackets
therefore in combination with the framing sections (11, 12, and 13) provide,
along
with housing (14), an integrated screen frame which will slide along the known
rails
in a patio door closure assembly with the guides (G) attached to handle (H)
via the
legs which extend upwardly and downwardly into the opening provided in the
handle with the handle being engaged with the T section shown in Figure 14 at
(S2)
attached to the screen and the handle at (305y) and to the tube at (305x) via
T section
(S1). As seen in Figure 11b the tube is attached to bushings (B1 and B2) which
are
subsequently attached to the pins provided with each bracket (20 and 22) to
allow
for the rotation of the tube. The bushings therefore provide for the pivoting
of the
tube while the spring is attached to the pivot (20b and 22b) and allows for
pre-
winding of the roller screen to a pre-determined tension to ensure that it
will return
to its fully accumulated position.
[0090] Referring now to Figures 12 and 13 there is illustrated examples of the
various
forms which the present invention may take without intending any limitation
being
derived by the reader in providing these examples. With regard to Figure 12
there is
illustrated corresponding sections found in prior art installations typical
for a slider
window, for example A, wherein a channel is provided within which a typical
screen
CA 02458913 2004-02-26
Page 30
frame fixed in position. However, the screen frame blocks the view of the
individual
as it is permanently placed in position until such time as it is removed. As
seen in
Figure 13A, the present invention provides for a combination of the screen
including
a frame which engages the same channel section in the prior art window of
Figure
12A, and yet provides with the same frame section, the movement of the roll
screen
to and from the housing (14) to allow for the occupant to have the screen in
place
when the window is open and have the screen out of view when the window is
closed. This may be accomplished utilizing the same window channel provided in
known window and typically slider window constructions.
[0091] Referring now to Figure 12B, there is illustrated a typical rail of a
patio door
having a section (L) which engages a roller attached to a frame section which
also
has permanently installed therewith a screen. With regard to Figure 13B, the
present invention includes and provides with the framing section and the
assembly
10, as seen and described in relation to the prior figures, a roller within
sectiori (13b)
which engages the known rail (L) within channel section (13b), and wherein in
addition the free end (31) of the roll screen is movable within the channel
(13a) of
Section 13. The same advantages are described in relation to Figure 13A and
are
realized therefore as well with the patio door screen embodying the invention.
The
screen frame may roll on the rail (L) and the screen may be guided to and from
an
accessible position to a position wherein the screen is out of view.
[0092] Referring now to Figure 12C or 12D there is illustrated a typical
casement
window planer screen which is attached to a framing section permanently and
would permanently block the view of an occupant through the casement window.
The planer screen is released via a pin release in Figure 12C or with a pivot
pin in
Figure 12D moved in the directions indicated. Utilizing the same channels and
stops
therefore the present invention in Figures 13C and 13D provide for placing of
a
casement screen of the present invention in exactly the same manner as with
the
prior art constructions with the additional combination heretofore unknown of
the
CA 02458913 2004-02-26
Page 31
framing section (13") including portions (13"b) for engaging the known
hardware
within the frame section and section (13"a) for providing for the guiding
channel of
the free end of a roll out screen assembly which has been integrated
therewith.
[0093] As is normally required it is highly recommended that sealing portions
(not
shown) be provided for sections 12 and housing 14 disposed along the entire
outside vertical edges thereo.f.
[0094] Referring now to Figures 1A, 2A, 3A, 4A, 6A, 7A, 8A, 9A, 10B, 10C, 1JlE
and
11D there is illustrated the screen assembly (100) similar in all respects to
screen
assembly (10) as previously described with the difference being that the
screen
assembly (100) does not roll or slide within a track. The screen assembly
(100) which
includes sections (111, 112, 113) and housing (114) supported on brackets (120
and
122) and further assembled with the assistance of brackets (121 and 123)
consistent
with the previous patio door example, and utilizing the similar bracket (122)
for
example in Figure 6A and 7A which includes a leg (122x) which will be inserted
within the framing sections (113 and 111) to assist with the assembly of the
embodiment. As best seen in Figure 11C, 11D and 11E the conventional u-shaped
section (200) is provided in a window assembly frame to which the window
screen
(100) will engage in a manner as shown in relation to Figure 10B and 10C
consistent
with previously described patio door embodiment with the section (200) being
engaged by the leg (122b) of the window screen (100) having a roll screen as
seen in
Figure 11E contained within the housing (114) identical to Figure 11A in all
respects
except that it is now a window screen as opposed to a patio door screen.
Therefore,
Figures 11B and 11E are comparable and the reader is referred thereto for like
parts,
and the operation thereof with the exception of the sliding. The descriptions
are
very much the same. The essence therefore, is that the window screen assembly
(100) will interfit within the frame section (200) provided adjacent the
header and sill
of a window closure assembly with the invention (100) including the roll out
screen
within housing (114) being guided via guides (g) within frame elements (111a
and
CA 02458913 2004-02-26
Page 32
113a) to and from the accumulated and the employed position. When the window
screen requires replacement or repair, it can easily be removed from the
c[lannel
(200), repaired or replaced by dropping the new screen or repaired screen in
position.
[0095] The window embodiment of window screen (100) may also be utilized with
the other examples provided in Figures 13A, B and C. A man skilled in the art
would understand what minor modifications would have to be made to do so.
100961 Referring now to FIG 15, there is illustrated a screen assembly (300)
similar in
all respects to the screen assembly (10 and 100) as previously described with
the
additional incorporation of wind retaining device (246), mitreless corner
bracket or
connector (247) and centrifugal braking system as best seen in relation to
Figure 16.
The screen assembly (300) includes sections (211, 212, 213) and a housing "H"
for
containing the screen supported on brackets (220,222). The framing sections
(211,212,213) do not have typical mitre cuts as seen in Figure 1 and are
interconnected at right angles using a mitreless corner bracket 247. The
brackets
(220, 222) are similar to those previously described which includes leg (222x)
which
will be inserted within the framing sections (211, 213) to assist with the
assembly of
the screen frame. The wind retaining devices (246) are connected by known
(preferably heat) welding techniques along the edge of the screen cloth (S) at
predetermined positions and rides in the same U-shaped track as the guides
(G).
[0097] In this way the screen cloth is guided to and from the retracted
position with
the additional assistance of the wind retainer 246. The operation of the
centrifugal
braking device is best understood by referring to FIGS 16 and 17. Integrally
formed
within the brackets (220 and 222) is a circular depression (240) into which an
0-ring
(248) made of suitable material, such as rubber, can be frictionally and
fixably
inserted. The circular depression 240 is coaxial with the pivot (220b) and
further
contains three centrifugal braking elements (241). The braking elements (241)
do not
CA 02458913 2006-12-20
Page 33
interfit tightly but are so designed that when placed witiun the circular
depression
(240), they have the ability to move radially, towards and away from the O-
ring 24$,
and the pivot 220b. Each braking element (241) is operably connected to a
bushing
(242) by the use of a detent (243). Each detent (243) interfits with an
associated notch
or recess (244) located in the bushing (242). The detents (243) and recesses
(244) are
ahgned when assembled to the circular depression (240) so as to allow the
brake
element (241) to slide in a radial direction towards and away from "0" ring
248. The
collar part 242a of the bushing 242 covers the opening 240 when the brake
elements
241 are contained therein. The bushing (242) is then inserted into and fixably
secured to the roll tube (1) that carries the screen (S). When the screen is
therefore
retracted the roll tube T and attached free wheeling bushing (242) rotate
allowing the
braking system defined by the recess (244), the braking elements (241)
captured by
recesses 244 to also rotate, At a predeteTT*=ir,Pd speed the brake elements
241 will
move in a controlled mSnner as the detents (243) and recess (244), allow the
braking
elemextts (241) to slide radiaAy by centrifugal force to frictionally engage
tite O-rixlg
(248) thus causing the bushing to reduce speed, which is free to move on
support
220b, and thereby cause the screen tube T to slow in angular speed and
resulting in a
braking,fOrce to-slt%v-t.$e-spee[i of relvactinn nf the crreen as it
ac.cvmuIates on the
tube T and prevent runaway thereof, In any other respects, this assembly
functions
in a similatc manner to the original embodiments described previously in
United
States Patent No. 6,701,994.
[00981 Referring now to Figures 18A, B, C and D and Figures 19A, B, C and D
and E
there is illustrated the bushings (242) and braking elements (241) with their
recesses
(244) and detents (243) that allow the radial sliding of the brake elements
(241) at
above a predetermined speed, to control the speed of ret=rackion of the screen
as
described above.
(0099] The bushing 242 aside from including slots 242 also includes slots
244x, and
244y to permit over all flexibility of the bushing to snuggly capture the roll
tube "T"
CA 02458913 2004-02-26
Page 34
and engage the support 220b. In fact portion 242b attaches over the support
part
220b to provide the free wheeling of the torque tube 242. A substantially "Z"
shaped
portion 242x separates portion 242b from side portion 242a to allow for
flexing of
these flanges, and preferably allows a .010 inch variation in the size of
screen tube
hollow.
[0100] Referring now to Figures 20A, B, C, D and E, there is illustrated
bracket 220
for the roll screen used in conjunction with the centrifugal braking system
described
previously. The bracket 220 is asymmetrical thus it is possible to have both
right and
left handed versions for the top and bottom of the screen assembly as seen in
Figures
20A and 20F. A circular depression (240) is provided that is coaxial to the
pivot
(220b) and integrally formed with the bracket. In this particular embodiment,
there
are additional detents used for locking the leg (222x) of the bracket to the
framing
sections (211, 213). There is also contained spacing guides (245) used for the
correct
placement and orientation of the housing (214) onto the tube "T".
[0101] Referring now to Figures 21A, B, C and D, there is illustrated the mi-
treless
corner bracket used in the present invention. The mitreless corner bracket
contains
two legs (250) that are substantially perpendicular to one another. Each leg
contains
a locking detent (251) for attachment to the framing sections (211,212, 213)
previously described. At the corner where the two legs would normally meet is
a
block (252). The width and thickness of this block is dependent on the
corresponding dimensions of the associated framing section (211, 212, 213)
that is
being attached to each leg (250) of the corner bracket. The block (252) allows
the use
of framing sections that are square cut and when a framing section is attached
to
each leg, a corner for the frame can be achieved without the need for a mitre
cut.
The corner bracket may also contains a U groove (253) that allows the entire
framing
section with the bracket to engage and/or slide within a rail in a
conventional
manner as previously described.
CA 02458913 2004-02-26
Page 35
[0102] Referring now to Figures 22A and 22B and 23, there is illustrated the
wind
retaining member 246 of Figure 15. The wind retainer is made of a flexible
material
and is affixed to the screen (S) by welding, preferably heat welding, as
previously
described. The wind retainer 246 contains screen engaging portions (254) and a
track
engaging portion (255). The screen engaging portions (254) when compared to
the
track engaging portion (255) of the wind retainer has a larger dimension so as
to
distribute any forces over a large enough area to prevent the tearing of the
screen (S)
adjacent the welded area. The relatively small size of the track engaging
portion
(255) and the rounded corners thereof also serves an additional purpose as
described
hereafter. The track engaging portion (255) is perpendicular to the screen
engaging
portion (254) and rides within the same track as the guide G described
previously.
When the screen is retracted, the flexibility and small thickness of screen
engaging
portions 254 attached to the track engaging portion (255) allows the wind
retainers
and the screen to which they are attached to be fully and smoothly accumulated
onto
the roll screen tube "T" in the housing (H) with the track engaging portion
255
riding above/below the screen itself (S) as best seen in Figure 23. Any
additional
bulk to the resulting spiral of roll screen (S) would only be the thickness of
the screen
engaging portion (254), which is very thin. Figure 23 illustrates the roll
screen
accumulated on tube "T" illustrating the track engaging portions disposed
above the
end on the retracted screen accommodated in housing H.
(0103] Therefore, in essence the present invention provides for a combination
of
improvements and features heretofore unknown allowing for installation of the
various forms of the invention within the hardware and channel portions
aliready
provided with known window constructions, patio door constructions, and
casement window constructions. The illustrations and descriptions in relation
to the
figures are for illustrative purposes only and in no way limit the invention.
CA 02458913 2004-02-26
Page 36
[0104] As many changes can be made to the preferred embodiments of the
invention
without departing from the scope thereof. It is intended that all matter
contained
herein be considered illustrative of the invention and not it a limiting
sense.
