Note: Descriptions are shown in the official language in which they were submitted.
FIELD OF INVENTION , 2 G ~ 3 7 7 4
This invention relates to devices which allow the
sliding and subsequent pivoting of a closure member from a
locked position wherein in sliding of the closure member is
allowed to a fully pivoted position where sliding of the member
is prohibited. The invention is preferably embodied in a tilt
slide window assembly.
This invention also relates to pivot shoes for closure
assemblies and specifically to a pivot shoe with locks within a
track or channel portion of a closure assembly.
BACKGROUND OF THE INVENTION
Double hung windows are well known in the art. There
are a multiplicity of examples of such double hung windows which
incorporate window frames and jamb guides located therein for
the sliding of a window sash within the jamb guide. Further
there are many examples within the prior art which allow for the
sliding of a window sash within a frame within the jamb channels
thereof which further incorporate a carrier or shoe attached to
the window sash which allows for the pivoting of the window sash
away from the window frame.
U.S. Patent 4,610,108 describes such a device which
incorporates a generally U-shaped spring member within a block,
wherein a pin or strut extending from the windows sash is
connected. A cam member is incorporated in the block member
which is rotatably engagable with the U-shaped member to lock
the block in position.
Another example of such a tiltable window sash is
found in U.S. Patent 3,844,066 wherein the block is further
attached through the sash balance. The cam is incorporated in
the block and a pin or strut is attached thereto for rotational
pivoting of the window sash and the subsequent locking of t
-- 2 --
377
block in position.
U.S. Patent 4,364,199 describes a similar type block
as described above incorporated in a window jamb weather strip,
whereby the slidable block is held fixedly in place with respect
to the weather strut.
U.S. Patent 4,718,194 describes a shoe or block for
pivoting a sash and allowing the sliding thereof as well within
the window jamb channel, wherein the window may be removed from
the assembly while the lock and balance remain in place. This
allows the insertion of the window when repaired without the
nuisance and deterioration of the movement of the sash and
block. Another example of an alternative structure which
illustrates the multiplicity of cams and block assemblies found
within the prior art is found with U.S. Patent 4,683,676. The
aforementioned reference describes a split shoe having a cam and
stud or pivot assembly which allows for the ease of repair of
the pivot block and portions thereof without providing for a
special feature within a jamb channel of a window frame.
Canadian Patent 1,195,186 describes a typical shoe and
sash assembly incorporating a spring member for gripping to the
jamb channel when the cam is rotated. U.S. Patents 3,146,501,
3,462,882, 3,184,784 and 3,055,062 illustrate alternative cam
devices used within window frames.
U.K. Patent Application 2,083,118 describes a window
assembly incorporating a pair of wheels within a sash frame to
allow for the sash frame to more easily slide within the jamb
channel.
U.S. Patent 3,842,540 describes a two part cam and
locking structure which attaches into the sash portions of the
window assembly and allows for the pivoting and locking of a
- 3 - 20~7~
-
window assembly. However, the structure is not embodied to
easily access the locking portion, being attached to the balance
sash as best illustrated in the figures 6 through 9 of the
aforementioned Patent. When the window sash is pivoted away
from the frame the handle portion does not disengage the window
sash but provides for locking portions to lock the sash in a
predetermined vertical position during tilting thereof.
Further within the prior art a tilt slider is
manufactured and distributed by Canadian Thermo Windows, whose
office is in Toronto, Canada, which provides sash assemblies and
pivots therefor for sliding in a horizontal direction. A shoe
or block is provided to allow for the sliding of the windows
within a channel within the header and sill sections of the
window frame. Pins extend from the block or shoe into the sash
at the top and bottom of each window sash. The pins, pivot or
struts as they are known in the art extend into a cam member
which is rotatable when the sash is rotated in a direction away
from the window frame and thus allows for the locking of the
window frame in position. There is further incorporated in the
shoe design a fastening device to fasten the pin or strut
extending into the cam into the shoe or block to prevent the pin
and hence window from falling out of the cam should the sash
have a tendency under its weight to load the cam pin. It has
been typically a problem to the operation of the window assembly
to ensure the easy movement thereof and prevent the window sash
from sagging when it is moved. It has been found that in
operation the window sash will not always return to the same
location for locking in that the, for example, top block or shoe
may be advanced in position when the window is sagged and
returned from its pivoted position and thus an opening to allow
20 1 3774
air to pass through may occur at the edge of the window when
closed. Further the window incorporates latching means to latch
the window in position for security purposes. Further locking
means are provided which incorporate tongues which extend in a
vertical position into the header and sill channels to prevent
the window from pivoting and allow when unlocked to pivot the
window. However such devices are typically recessed into the
window sash at the edge thereof and are often difficult to
operate.
Further within the prior art the aforementioned
problems described above will generally occur when any pivot
block provided on the edge of the window sash moves in relation
to another pivot block. The only means for securing the sash of
the window to the pivot block being either a pin or strut. The
continuing motion and sliding of the windows back and forth and
the pivoting thereof causes the windows to misalign and sag
under the weight of gravity especially when manufactured in a
vertical tilt slider. In order to overcome this problem an
improved bracing system is sadly lacking within the prior art.
A multiplicity of designs for sliding patio doors
further exist within the prior art. A typical patio door is
made up of two framed main glass panels sliding in a horizontal
direction but which do not typically pivot. The weight of the
patio doors would require a substantial device in order to allow
for the pivoting thereof, such hardware would further eliminate
or minimize the door sagging out of position and the need for
realignment of the doors when pivoted back to the closed
position. The pivoting of patio doors would be quite attractive
and would allow for the incorporation of French type doors in
the industry. No such doors exist within the market place at
.~ ~
~1 37~4
the present time.
It is therefore an object of this invention to
overcome all of the deficiencies in the prior art stated above
- which allows for smooth operation of a closure member which is
capable of both sliding within a guide channel and tilting upon
a pivot assembly thereof. Nowhere within the prior art is such
a device provided which allow for the manufacture of heavier
windows in larger sections without the sagging of the window and
having reliable operating pivots incorporated in the block
members which both allow for the pivoting and locking of the
window by the user.
It is a further object of the invention to provide a
reliable pivot shoe for use in relation to a guide channel
disposed within a frame for a closure member whereby locking of
the pivot shoe occurs almost immediately when the window or
closure member is rotated.
It is a further object of this invention to provide a
pivot shoe assembly which is interconnected to allow for the
bracing of the closure member and the prevention of sag thereof.
Another one of the problems in the prior art
especially when forming vinyl or plastic extrusion for framing
portions of a closure assembly is is that there may be a
distortion in the extrusion because of the tolerances of
manufacture of the extrusion. For example, a typical extrusion
has a track portion which has a height, a width and a length.
One problem will occur when the overall width of the track
differs along the length of the track resulting in a variation
in the operation of a pivot shoe.
Therefore, in constructing vinyl extrusions a pivot
shoe as taught in the parent materials, clamps against the sides
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- 6 - 20 ~ 3774
of the track but has a maximum ability to move the locking
portions. The cam when rotating has a particular offset
distance and the legs of the locking portions extending towards
- the side of the track an equivalent amount to that offset
distance. Should however the vinyl extrusion have a significant
variation in width from end to end in the dimension between the
walls of the track, the pivot shoe and the locking thereof will
work less effectively or in some instances may not work at all.
For example, if the overall width of the shoe when the locking
means are extended is 29.0 millimeters and the tolerance
variation in the formation of the width of the extrusion is
between 28.5 and 29.2 millimeters then the pivot shoe will
operate loosely in some of the tracks and will not offer any
braking what so ever over some of the track because the
variation and the tolerances of the extrusion is outside of the
ability of the pivot shoe.
Of course, the problem is discussed in relation to
vinyl and plastic. This also is the case when forming an
aluminium window or any structure in a window regardless of the
material used as any structure will have a range of tolerance in
manufacture.
Another problem experienced when using plastics such
as vinyl with the pivot shoe substantially as taught in US
Patent 4,888,915 is the flexing of the side walls under pressure
from the locking portions of the pivot shoe. The flanges of the
shoe flex sufficiently to deform the plastic track away from the
action of the locking portions of the shoe and thus decrease the
effectiveness of the braking action.
Most known closure assemblies for patio doors, sliding
windows, doubled hung windows and the subject matter of U.S.
- 7 ~ 2 0 1 37 7 4
Patent 4,888,915 have tracks or channels wit~ih!~hich a pivot
shoe glides. Nowhere within the prior art is there found a
pivot shoe which has clamping means which captures at least one
flange of the track portion therebetween to provide the locking
or securing functions of the pivot shoe.
It is therefore a primary object of this invention to
provide a pivot shoe which includes clamping means which in use
clamps at least one flange of the track portion of a closure
assembly to provide the braking or securing of the pivot shoe
within the track.
It is a further object of this invention to provide a
pivot shoe which is lockable within a track of a closure
assembly and includes operating means to do so.
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
According to one aspect of the invention, there is
provided a pivoting and sliding closure assembly comprising:
i) an opening extending in a peripheral frame said
peripheral frame including a header portion, a sill portion and
two vertically extending jamb portions
ii) the sill and header portions or the two jamb
portions having disposed therein or attached thereto track
portions extending in a substantially parallel direction to the
extensions of said peripheral frame portions
ii) a) at least one closure member slidable within
said track portions and pivotable proximate at least one end
thereof and latchable proximate the other end thereof
- 8 ~ 20 1 37 7 4
iii) each track portions having disposed therein at
least two pivot shoes being interconnected by interconnecting
means, each pivot shoe including a preferably substantially
- rectangular shaped carrier portion, the carrier preferably
having rolling means disposed therein for assisting the movement
of the pivot shoe, the carrier further having interconnecting
portions therewith to interconnect with the interconnecting
means (preferably lockable interconnecting means lockable in
relation to said carrier) some of the carrier portions having
disposed therein an opening wherein camming means are disposed,
said camming means being moveable to cause locking means
disposed with said pivot shoe to engage and lock the pivot shoe
from sliding movement in the track portions
iv) some of the camming means of some of the pivot
shoes having engagement means therewith for engagement with
pivot means of the at least one closure member to allow the at
least one closure member to rotate when free to do so and upon
rotation thereof to cause the camming means to rotate thus
locking the locking means of the pivot shoe
v) some of the camming means of some of pivot shoes
having latching means engaged therewith for latching the at
least one closure member having latch engaging means therewith
to prevent the closure member from pivoting upon its pivot means
when the closure member remains slidable with said track and
which when disengaged locks the pivot shoe in position with
respect to the track by engaging the locking means thereof
vi) the at least one closure member being braced
from sagging by the interconnecting means interconnecting the
pivot shoes disposed in each track, the interconnecting means
further preventing the pivot means from disengaging from the
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-
9 20~3774
relevant pivot shoe when the at least one closure member is
rotated to an open position.
According to another aspect of the invention, there is
- provided a pivoting and sliding window assembly comprising:
i) an opening extending in a peripheral frame said
peripheral frame including a header portion, a sill portion and
two vertically extending jamb portions
ii) the sill and header portions or the two jamb
portions having disposed therein or attached thereto track
portions extending in a substantially parallel direction to the
extensions of said peripheral frame portions
ii) a) at least one window sash slidable within said
track portions and pivotable proximate at least one end thereof
and latchable proximate the other end thereof
iii) each track portions having disposed therein at
least two pivot shoes being interconnect by interconnecting
means, each pivot shoe including a preferably substantially
rectangular shaped carrier portion, the carrier preferably
having rolling means disposed therein for assisting the movement
of the pivot shoe, the carrier further having interconnecting
portions therein to interconnect with the interconnecting means
(preferably lockable interconnecting means lockable in relation
to said carrier) some of the carrier portions having disposed
therein an opening wherein camming means are disposed, said
camming means being moveable to cause locking means disposed
with said pivot shoe to engage and lock the pivot shoe from
sliding movement in the track portions
iv) some of the camming means of some of the pivot
shoes having engagement means therewith for engagement with
pivot means of the at least one window sash to allow the at
20 1 3774
least one window sash to rotate when free to do so and upon
rotation thereof to cause the camming means to rotate thus
locking the locking means of the pivot shoe
v) some of the camming means of some of pivot shoes
having latching means engaged therewith for latching the window
sash having latch engaging means therewith to prevent the at
least one window sash from pivoting upon its pivot means when
the closure member remains slidable with said track and which
when disengaged locks the pivot shoe in position with respect to
the track by engaging the locking means thereof
vi) the at least one window sash being braced from
sagging by the interconnecting means interconnecting the pivot
shoes disposed in each track, the interconnecting means further
preventing the pivot means from disengaging from the relevant
pivot shoe when the window sash is rotated to an open position.
According to yet another aspect of the invention there
is provided for use in a pivoting and sliding closure assembly,
a closure member (preferably a window sash) slidable within a
guiding channel having outwardly extending flanges and pivotable
therefrom, the closure member having a substantially rectangular
frame having a top and bottom, and having engaged at its top and
bottom proximate one end pivot means for engaging a first and
second pivot shoe, and having disposed proximate the other end
thereof proximate the top and bottom means for engaging a third
and fourth pivot shoe,
said pivot shoes slidable in said guiding channel and
comprising a body having a top and bottom (preferably made from
thermoplastic material) and having disposed proximate the bottom
thereof at least one roller or wheel, said pivot shoes having
disposed proximate one end thereof fastening means to fasten at
20 1 377~
least the first and third, and the second and fourth pivot shoes
together by connecting means extending therebetween (preferably
the connecting means being adjustable in length), each pivot
- shoe having a slot disposed proximate the end thereof remote the
fastening means, said slot including an opening therein for a
cam member, said slot and opening extending from proximate the
top to proximate the bottom of said pivot shoe, said cam member
being substantially cylindrical having a central axis and having
camming means thereupon or upon the perimeter of the opening of
said slot wherein a detent extends with said cam for engagement
with the pivot means connected to the closure member for the
first and second pivot shoe and a handle member for the third
and fourth pivot shoe, said handle member having engagement
means thereupon for engagement with the means for engaging the
third and fourth pivot shoe of the closure member, the body
having two legs, one on each side of the slot, having a clamping
surface upon the surface of the body adjacent the outwardly
extending flanges of the guide channel;
whereby when the handle member of the third and fourth
pivot shoes are rotated the pivot means and the cam member
rotate, and the two legs of the body move laterally away from
the cam member urged by the camming means, the clamping surface
thus engages the outwardly extending flanges of the guide
channel thus locking the third and fourth pivot shoes in
position in relation to said first and second pivot shoes,
however rotation of the handle member disengages the means for
engaging the third and fourth pivot shoes and the closure
member, allowing the pivoting of the closure member upon the
first and second pivot shoes upon the pivot means away from the
guide channel, the closure member when pivoted causes the cam
, ~
~ - 12 - 2913774
member of the first and second pivot shoe to rotate wherein the
first and second pivot shoes are locked in position in the guide
channel in identical manner to the third and fourth pivot shoe
further prevented from movement under the weight of the closure
member by the third and fourth pivot shoes locked and
interconnected to the first and second pivot shoes.
According to yet another aspect of the invention the
assembly may comprise third and fourth pivot blocks whose
handles extend in a substantially horizontal direction from the
extension of the vertical extending pivot pins when the guide
channel in which the first and third pivot shoe and the guide
channel in which the second and fourth pivot shoes are
vertically displaced a predetermined amount to allow pivoting of
the window.
According to yet another aspect of the invention the
closure member and the preferable window sash may further
comprise weather stripping portions extending from the top and
bottom thereof.
According to yet another aspect of the invention the
cam member having further comprise locking means to lock the
pivot pins within cam opening.
According to yet another aspect of the invention the
cam member may further comprise recesses upon the surface
thereof in alignment with beads upon the perimeter of the
opening of the slot of the rectangular body, whereby the
recesses and beads when aligned allow sliding movement of the
shoe, wherein when not aligned cause the legs to move and cause
the locking surfaces to engage the flanges of the guide channel.
According to yet another aspect of the invention the
closure assembly may comprise patio doors.
- 13 - 2~1~77~
According to still yet another aspect of the invention
the handles may further comprise keyed locking means.
According to yet another aspect of the invention a
pivot shoe for connection to a pivotable and slidable closure
member (preferably a window sash) is provided for movement in a
guiding channel having outwardly extending flanges, the pivot
shoe comprising a body having a top and bottom and two ends
(preferably formed from thermoplastic materials), said body
having disposed at one end thereof an opening being generally
cylindrical in shape, the body having disposed upon the
perimeter of the opening at least one bead (preferably laterally
opposed) extending towards the center of the opening, the
opening having a cam member disposed therein engagable with the
closure member and having disposed upon its perimeter at least
one recess (preferably laterally opposed) compatibly shaped with
and for engagement with the at least one bead of the opening,
the cam for engaging clamping means disposed with said pivot
shoe for clamping against the outwardly extending flanges of the
guide channel when at least one recess of the cam moves from a
position wherein it is aligned with the at least one bead of the
body disposed proximate said opening, to a position wherein it
is not aligned with said bead.
According to yet another aspect of the invention the
pivot shoe may further comprise roller means to improve the
sliding movement thereof in the guiding channel.
According to yet another aspect of the invention each
pivot shoe may further comprise fastening means to fasten more
than one pivot shoes together. Preferably each body having an
opening on the top thereof remote the cam for accepting a screw
fastener. Preferably the fastening means being adjustable.
- 14 - 20 1 371~
According to yet another aspect of the invention the
roller means may further comprise at least one roller having a
central axis and having mounting pins extending from the ends
thereof preferably for insertion within an opening within said
body proximate the bottom thereof, the opening for said mounting
pins being tapered from bottom to top wherein the narrowed
portion is of less width than the diameter of the mounting pins,
the narrow taper having an arcuate portion above it to retain
the mounting pins in position in use.
According to yet another aspect of the invention the
pivot shoe may further comprise clamping means extending wherein
the clamping means are two legs of the body proximate the
opening created by a slot extending from proximate the top to
proximate the bottom of the body and substantially bisecting the
openings, each leg by movable into clamping engagement with the
outwardly extending flanges of the guiding channel when the cam
is pivoted.
According to a further aspect of the invention the
assembly may comprise a carrier wherein the locking means of the
pivot shoe further comprises braking surfaces affixed to the
pivot shoe to engage the track portions of the closure assembly.
In a preferred embodiment the braking surfaces further comprises
preferably metal inserts having pebbled surfaces.
In yet another aspect of the invention there is
provided for a closure assembly a pivot shoe having an opening
therewith moveable in track portions of the closure assembly,
the pivot shoe having camming means disposed in the opening,
locking means disposed with the pivot shoe for engagement with
track portion of the closure assembly, the locking means having
braking surfaces therewith to engage the track portions of the
- 15 - ~3~4
closure assembly. In a preferred embodiment the braking
surfaces further comprises inserts affixed to the pivot shoe.
Preferably the inserts have a pebbled preferably metallic
- surface.
In another embodiment the pivot shoe includes a recess
disposed proximate the side thereof within which the insert
including the braking surfaces is disposed. Preferably the
recess includes means to orient the braking surface to the
surface of the track it will engage when the locking means of
the brake shoe is operated to engage the track.In a preferred
embodiment the brake surfaces are disposed upon the surface of a
braking element disposed in the recess of the brake shoe.
Preferably the braking element is substantially L shaped in
cross section and includes a first and second portion.
Preferably the first portion includes the brake surfaces, and
the second portion includes engaging portions to engage the
recess of the shoe, the recess having disposed therein means
(preferably a slot ) to allow the braking element to float in
the recess and remain oriented substantially parallel to the
track portion to be engaged when the locking means of the shoe
are operated to engage the track.
According to one aspect of the invention there is
provided for use in a track having at least one engaging portion
therewith, the track being part of a closure assembly, a pivot
shoe for movement in the track of the closure assembly, the
pivot shoe comprising a carrier portion for movement within the
track, preferably the carrier portion having disposed proximate
the bottom thereof rolling means for assisting the motion of
the shoe within the track of the closure assembly in use, the
shoe having disposed therewith clamping means to clamp in use
- 16 - 2~1 377 4
at least one engaging portion of the track of the closure
assembly, the clamping means being in engagement with operating
means moveable from a position wherein the clamping means engage
- the at least one engaging portion of the track wherein the
closure member of the closure assembly is locked or secured in
position, to a position wherein the clamping means disengages
the at least one engaging portion of the track wherein the
closure member of the closure assembly is free to move in the
track.
In a preferred embodiment the shoe includes an opening
within which a handle portion moves, the handle portion having a
cam portion disposed at one end and a lever portion disposed at
the other end, the opening having disposed therewith the cam
portion of the handle portion and a first clamping portion, the
carrier having a second clamping surface disposed therewith
(preferably the second clamping surface including a brake pad
having a preferably pebbled braking surface for engagement with
the at least one portion of the track, the first clamping
portion being moveable with respect to the second clamping
surface of the carrier portion by the operation of the handle
portion which engages with the first clamping portion
proximate the cam portion thereof to clamp the at least one
portion of the track against the at least a second surface, the
handle portion including the lever portion engaging with the a
sash retainer disposed with the closure member when the the shoe
is disengaged from the track, wherein the operating means is
moveable from a position wherein the first clamping portion and
the second clamping portion engage the at least one portion of
the track of the closure assembly whereat the operating means is
moved to its locking position, the cam means thereof having
_ - 17 - 2013774
moved the first clamping portion to engage with the at least one
portion of the track of the closure assembly clamped between the
first clamping portion and the second clamping surface, whereat
the sash retainer of the closure member is disengaged from the
lever portion of the handle portion whereat the closure member
is free to move away from the track of the closure assembly to a
position wherein the handle portion moves the first clamping
portion away from the at least detent of the track and the
second clamping surface by the motion of the cam portion of the
handle portion, whereat the lever portion of the handle portion
is engaged with the sash retainer of the closure member wherein
the closure member is in engagement with the carrier portion and
can slide in the track of the closure member of the closure
assembly upon the pivot shoe.
In essence the shoe described in the previous
paragraph although different in structure, is similar in
operation to the shoe illustrated in U.S. Patent 4,888,915
wherein when the closure member is engage by the detent of the
locking member it will move only within the track of the closure
assembly. When the locking member is released from the detent
portion of the closure member and the closure member is free to
move away from the track then the portions engaging the track
lock against the side portions of the track. Of course there is
no reference to clamping portions clamping a portion of the
track therebetween.
In a preferred embodiment a track of a closure
assembly is provided the track having at least a first engaging
portion disposed therewith preferably being a flange, the at
least a first engaging portion riding between clamping portion
of the shoe, the shoe including an operating portion having a
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- 18 - 2 G 1 37 7 4
cam portion at one end and a lever portion at the other, the
operating portion being moveable from a position wherein the
lever portion engages the sash retainer of the closure assembly
(similar to that which is described in relations to Figures 6C
anc 6D of my patent) to a position wherein the sash retainer of
the closure assembly is disengaged but the clamping surfaces
clamp the at least at first engaging portion of the track,
preferably at least a first flange, to prevent the motion of the
shoe with respect to the track.
In one preferred embodiment the shoe of the instant
invention is inter-connected with a second shoe by inter-
connecting means, the second shoe including portions to allow
the movement of the window away from the track of the closure
assembly, wherein when the closure member is moved away from the
track assembly such motion will cause clamping surfaces disposed
with the second shoe to clamp the at least at first engaging
portion of the track therebetween and securing the position of
the shoe in the track of the closure assembly while the closure
member is moving away from the closure assembly.
According to yet another aspect of the invention there
is provided for use in a closure assembly having a track
disposed therewith within which a closure member is moveable, a
pivot shoe comprising a first and second clamping portion
containing at least a first engaging portion of the track
therebetween in use and for engaging the at least a first
engaging portion therebetween in the lock position and
disengaging the engaging portion therebetween yet maintaining
the position of the engaging portion therebetween in use, the
shoe including operating means for providing the motion of at
least one of the clamping means with respect to the other
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- 19 2 0 1 3 7 7 ~ -
clamping means and the at least at first engaging portion of the
track, the operating means being operable from a first position
wherein the clamping means clamp the at least a first engaging
portion of the track to a second position wherein the clamping
means disengages the at least a first engaging portion of the
track of the closure assembly in use. Preferably the at least a
first engaging portion of the track may comprise flanges
preferably extending substantially laterally away from the sides
of the track towards one another. In a preferred embodiment the
clamping surfaces retain the laterally extending flanges
therebetween and move thereupon with the sliding of the closure
member within the track of closure assembly. In another
embodiment the clamping portions clamp the laterally extending
flanges top and bottom thereof to capture the flanges
therebetween in the lock position and to retain the flange
therebetween in the disengaged position. In yet another
embodiment at least one of the clamping portions has disposed
therewith a brake pad, preferably metal, which engages the
bottom of the laterally extending flanges.
According to one aspect of the invention there is
provided for use with a closure assembly a shoe, the closure
assembly having a closure member and a peripheral frame having
disposed therewith a track or rail within which the closure
member is moveably secured in use from an initial position
wherein the closure member extends substantially parallel to the
frame to a position wherein the closure member is disposed at an
angle to the frame, the track or rail having at least a first
engaging portion and at least a second engaging portion, the
shoe comprising at least a third detent and at least a fourth
detent to engage the at least a first engaging portion and at
;:
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- 20 - 2 0 1 3 7 7 4
-
least a second engaging portion of the track or rail, the at
least a third detent for engagement with with the at least a
first engaging portion of the track or rail when the closure
member is disposed in the initial position to secure the shoe
and the closure assembly thereat, the at least a fourth detent
for engagement with the at least a second engaging portion of
the track or rail when the closure member is moved past a
predetermined angle towards a fully open position, the track or
rail with the at least a first engaging portion and at least a
second engaging portion being removably engagable with the at
least a third detent and the at least a fourth detent of the
shoe by the operation of first and second operating means
respectively, the first and second operating means disposed with
the shoe and moveable from a position wherein the detent
portions of the shoe engage the engaging portions of the track
or rail to a position wherein the detent portions disengage the
track or rail portions, whereby when the closure member is in
the first position the first operating means is operated to
engage the at least a third detent of the shoe with the at least
a first engaging portion of the track or rail thus securing the
shoe and the closure member in the track or rail, whereat when
the first operating means is operated to disengage the at least
a third detent of the shoe with the at least a first engaging
portion of the track or rail the closure member is free to move,
whereat when the closure member is moved past the predetermined
angle towards a fully open position the second operating means
of the shoe is operated at the predetermined angle to engage the
at least a fourth detent of the shoe with the at least a second
engaging portion of the track thus securing the shoe and the
closure member in the track or rail, whereat when closure member
._~
_ - 21 - 20 1 3774
is moved towards the initial position and past the predetermined
angle, the at least a fourth detent of the shoe disengages the
at least a second engaging portion of the track or rail ,
whereat the closure member is moved to the initial position to
be secured thereat when the first operating means is operated to
engage the at least a third detent of the shoe with the at least
a first engaging portion of the track or rail.
According to yet another aspect of the invention the
shoe may further comprise a pivot shoe carried in the track or
rail of the closure assembly wherein the at least a first
engaging portion and the at least a second engaging portion are
surfaces of the track or rail and wherein the at least a third
detent and the at least a fourth detent of the shoe are
portions of the shoe each portion having at least a surface
disposed proximate the surfaces of the track or rail. In a
preferred embodiment the first and second operating means of the
shoe are first and second cam members which engage the portions
of the shoe having at least a surface disposed proximate the
surfaces of the track or rail. Preferably the first cam member
of the shoe has a handle engaged therewith, the handle to move
the first cam member to engage the portions of the shoe having
the at least a surface disposed proximate the surfaces of the
track or rail and to move the at least a surface into locking
engagement therewith. Preferably the second cam member of the
shoe has a pivot means (preferably an opening for receiving the
pin of the closure member) disposed therewith for engagement
with pivot means (preferably a pin of the closure member engaged
therewith), the pivot means of the closure assembly and the shoe
to move the second cam member to engage the portions of the shoe
having the at least a surface disposed proximate the surfaces of
- 22 - 2013774
the track or rail and to move the at least a surface into
locking engagement therewith.
According to yet another aspect of the invention the
pivot shoe may further comprise first and second operating means
comprising one integral means operable in two modes to effect
the engagement of the shoe with the track or rail of the closure
assembly.
According to yet another aspect of the invention the
pivot shoe may further comprise detent portions which engage
first and third engaging portions of the track or channel which
are first and second surfaces. In a preferred embodiment the
third engaging portions are flanges which extend substantially
laterally toward one anther disposed proximate the top of a
generally U shaped channel. Preferably the pivot shoe further
comprises second and fourth detents which engage the flanges and
the surfaces.
According the yet another aspect of the invention the
pivot shoe may further comprise second and fourth detents which
are upper and lower detents, one disposed above the other and
having opposite facing surfaces, the surfaces being moveable
with respect to one another and which clamp down or
alternatively upward against the first and third engaging
portions of the track which are preferably flanges.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be illustrated with respect to the
following drawings illustrating embodiments of the invention in
which:
Figure 1 is a perspective view of a tilt sliding
window assembly illustrated in a preferred embodiment of the
invention.
,A,--~i
- 23 - 2 0 1 3 7 7 4
Figure 2 is a similar view to that of Figure 1,
illustrating the movement of the sash of the window assembly in
a preferred embodiment of the invention.
Figure 3 is a perspective view of a double hung window
assembly illustrated in an alternative embodiment of the
invention.
Figure 4 is a view similar to that of Figure 3,
illustrating the movement of the sash portion of the window
assembly in an alternative embodiment of the invention.
Figure 5A is a perspective view of a carrier mechanism
of a preferred embodiment of the invention illustrating the
components thereof.
Figure 6E is a perspective bottom view of the carrier
mechanism of Figure 5A in a preferred embodiment of the
invention.
Figure 6F and 6G are a schematic view of the carrier
mechanism of Figure 6E, illustrating the operation thereof in a
preferred embodiment of the invention.
Figure 6H and 6I are a schematic top view of the
blocks as illustrated in Figures 6F and 6G incorporating a
handle portion in another preferred embodiment of the invention.
Figure 6J is a perspective view of a brake pad
assembly illustrated in a preferred embodiment of the invention.
Figures 6K,L,and M are closeup views of the brake
assembly of figure 5A.
Figure 7a is a exploded perspective view of the sash
30 of Figure 1 illustrating the operating components thereof in
a preferred embodiment of the invention.
Figure 7b is a close-up cut away end view of the
carrier Bd illustrated in a preferred embodiment of the
- 24 -
_ 2G1 37'4
invention.
Figures 7c, 8 and 9 are partly exploded perspective
views of the sash 30 of Figure 7a illustrated in a sequence of
events for sliding and tilting of the window in a preferred
embodiment of the invention.
Figure 10 is a perspective view of the window assembly
of Figure 1 as shown in a fully opened position in a preferred
embodiment of the invention.
Figures 11, 12 and 13 are top schematic views of the
layout of alternatively pivoting window sashes embodied within
the window assembly of Figure 1 in alternative embodiments of
the invention.
Figure 14 is a perspective view of a brake shoe
incorporating clamping portions illustrated in a preferred
embodiment of the invention.
Figures 15 and 16 are partial perspective views cut
away in part to illustrate the incorporation of the pivot shoe
of figure 14 therein illustrated in a preferred embodiment of
the invention.
Figure 17 is an exploded perspective view of the pivot
shoe of figure 14 illustrating the interrelationship of the
parts thereof.
Figure 18 is a closeup schematic view of the shoe
installed in a window assembly of figure 15 and 16.
Figure 19 is an end view of figure 18.
Figures 20 and 21 are identical views to figure 18 and
19 with the exception in the position of handle 140 shown in the
locked position.
Figure 22 is an exploded view of a cam installed in a
pivot shoe for a double hung window assembly illustrating the
,r
_ - 25 - 2013774
clamping portions illustrated in a preferred embodiment of the
invention.
Figure 22A and B are a schematic views of a pivot
shoe and components thereof including clamping portions for use
with a pivot of a closure assembly similar to figure 7A
illustrated in an alternative embodiment of the invention.
Figures 23A and B are cutaway elevation views of
alternative embodiments of the invention incorporating clamping
portions.
Figures 24A ,24B and 25 are schematic views of track
portions of a closure assembly in which pivot shoes
incorporating alternative embodiments of the invention are
illustrated.
Figures 26 through 31 are schematic views of an
alternative embodiment of the invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION
Referring now to Figure 1, there is illustrated a wall
Wl having an opening therein within which a window assembly 10
is contained. The window assembly 10 is made up of a peripheral
frame 20 having a header portion 22 and a sill portion 27
interconnected by vertical stiles 25. Disposed upon the header
section 22 and the footer section 27 are track or channel
portions 27a and 22a not shown. Window sash elements 30 and 40
are slidably received within the track portions 27a and 22a
respectively. The sash elements 30 and 40 slide in directions
Dl and D2 respectively from open to closed positions as is known
in the art. However, at the corners of each window assembly, as
best illustrated in relation to Figure 7a are disposed carrier
mechanisms, such as By found in Figure 1 which offer unique
features which allow the window to both slide in the directions
- 26 - 20~ 31~ 4
Dl and D2 and to pivot in a direction laterally away from the
window frame 20.
The sash element 30 is made up of horizontally
extending members 37 and 27 and vertically extending members 35i
and 35ii. Window sash element 40 is comprised of horizontally
extending elements 47 and 42 and vertically extending elements
45i and 45ii.
The block or carrier mechanism By has a handle
disposed thereupon Hl which allow the window to be locked in
position in its sliding mode the details which will be described
hereinafter.
Referring now to Figure 2, there is illustrated the
identical window assembly of Figure 1 with all of the components
thereof, wherein the window sash 30 has moved from its position
proximate the frame member 25a to a position wherein the opening
1, normally covered by a screen allows the passage of air from
the outside environment. The handle Hl has been rotated as
illustrated in relation to Figure 6F and 6G to allow for the
pivoting of a sash 30 in a direction Pl to allow for the
cleaning of the window pane 7 on both side thereof. A window
normally has a tendency to sag when held in the position
illustrated in Figure 2, however, because of a unique bracing
system, as illustrated in Figure 7a the window remains firmly
locked and supported in the position illustrated in Figure 2.
The details of such mechanism will be described hereinafter.
Referring now to Figures 3 and 4, there is illustrated
a double hung tilting window assembly, wherein sash elements 2
and 3 are supported on a track Tl extending in a generally
vertical direction for sliding of the sashes 2 and 3 therein.
For purposes of illustration, all track elements extending
_ ` - 27 - 2 0 1 3 7 7 4
vertically are entitled Tl. The window sashes 2 and 3 can move
in directions D4 and D3, within a multiplicity Tl, two each for
each window, extending substantially vertically. Each stile 2
and 3 are composed of sections Sl, S2, S3, S4, S5, S6, S7, and
S8 respectively as is known in the art. However, a block Bx as
best illustrated in relation to Figure 6F and 6G is provided to
allow the pivoting of the window sash 3 in a direction P2 allow
the cleaning thereof while ensuring the firm support of the
window and the placement of the block Bx within guide channel
S40 disposed within member S4. Further illustrated in Figure 4
are track portions T2 disposed in a general horizontal direction
as is known in the art. The block Bx may be conveniently
attached to the sash balance of a double hung window in order to
ensure the operation of the mechanism. As illustrated in Figure
7a the block or carrier Bx would be connected to the pivoting
member or carrier at the end of the sash 3, wherein horizontally
extending portions S2 are disposed. Thus, although the window
is pivoted to a position laterally away from its normal sliding
position, it is fully supported by a unique structure held
within the tracts Tl and locked therein which will be described
hereinafter.
Thus, we see that the instant invention has
application to sliding windows whether it be the sliding
assembly illustrated in Figure 1 or the sliding assembly
illustrated in Figure 2. The advantages of the invention may
still be realized in either embodiment.
Referring now to Figure 5A and Figure 6E, there is
illustrated in perspective and bottom perspective views
respectively a typical carrier mechanism of the block of a
preferred embodiment of the invention. A thermoplastic guide
- 28 - 2~ ~ 311~
member B is moulded or formed from thermoplastic materials
having a top and bottom and two ends, having disposed at one end
thereof at the top thereof the fastening element B for
- interconnecting flat rod F via a notch or recess F1 which will
engage with a threaded opening B6 upon a cut out section B11 on
the top of the block or carrier B. Of course it is understood
that at the other end of the flat rod F, exists another block or
carrier mechanism which is clearly illustrated in Figure 7a.
The notch F1 may merely be a hole in another embodiment.
Located at the other end of the block B extending from top to
bottom of a carrier mechanism is a cam portion C having cut out
portions C1 disposed on each side thereof facing the track
engaging portions B3 and B4 of the block B. Within the cam C is
further disposed an opening of generally rectangular shape C2,
within which a pin or pivot will extend in order to support the
pivoting of the window frame or sash the details of which will
be described hereinafter. Located adjacent the recesses C1 of
cam C are disposed horizontally extending beads B9 and B10 which
extend inwardly towards the center of the cam and extending in a
direction of the width of the block B. A slot B8 is located
within the block B extending from top to bottom which
essentially bisects the opening (not illustrated) within which
the cam C rides. The slot B8, thus bisects the front portion of
the block B into two legs, B1 and B2 remote the flat bar F.
Extending upwardly away from the block B are shoulders slO0 and
B200 which extend along the length of the block mechanism B and
further provide the slot or recess into which the flat bar F
will engage. An opening B7 is disposed upon the bottom of the
carrier B and the intersection of the opening proximate the top
provides for a slot proximate the fastening opening B6 within
~'
- 29 - 2 0 1 3 7 7 4
which the flat bar F is connected. Disposed within the opening
is a roller R being supported by extension portions of generally
tubular form Rl and R2 which fit within slots Sl and S2 formed
upon the bottom of the block B proximate the sidewalls B3 and
B4. The opening B7 is formed with peripheral walls A and B and
having a top C which is defined as the bottom of a portion B5.
The roller is provided for improving the movement of the block
within a track or guide channel of a jamb, sill or header.
As is illustrated in relation to Figures 6F through
6I, the cam C may contain a pivot pin connected to either a
window sash or a handle. The details of the operation of the
carrier or block B will now be described in relation to Figures
6F through 6I.
Referring now to Figures 6F through 6I, there is
illustrated in schematic form the operation of a block B or
carrier B located within a track T having lateral sidewalls Tx
and Ty extending in a direction from top to bottom of the block
B. For simplification purposes the main portions of the block B
are illustrated, wherein a roller R is supported within openings
formed in the carrier mechanism as illustrated in relation to
Figures 5A and 6E, the openings being slightly smaller at the
bottom thereof than the diameter of the pins or tubular
extension Rl and R2 in order to ensure a firm fit and in the
preferred embodiment the openings having a bevelled shaped
proximate the bottom of the carrier s and extending into an
arcuate shape approximate the top, thus allowing the pins to be
snugly secured within the arcuate opening thus allowing rotation
of the roller Rl while providing for a snug fit prevented from
being moved by the top bevelled portion of the opening being
slightly narrower than the diameter of the pin. It is important
2~ ~ 3~
that the roller be positioned so as to improve the sliding
characteristics of the window and thus it must extend slightly
below the carrier bottom. A cam C is located within the opening
(not shown) bisected essentially by the slot B8. The cam having
recesses within the perimeter thereof at C1 within which
complementary beads B9 and B10 extend when the block or carrier
is free to slide within the channel or tract T and when the slot
C2 containing the pin or pivot (not illustrated) is in a
position wherein the slot C2 extends towards the beads B9 and
B10. However, as illustrated in Figures 6G, when the cam is
rotated in the direction wherein the alignment of the recesses
C1 and C2 of the cam C are no longer in alignment with the beads
B9 and B10, then the leg portions B1 and B2 of the carrier B are
forced laterally away from the slot B8 and thus engaging the
sidewalls B4 and B3 against the inside surface of the track
sidewalls Tx and Ty thus binding the block or carrier B from
moving in any direction. The blocks illustrated in Figures 6F
and 6G are those blocks which allow for the pivoting of the
window or sash and allow for the almost immediate locking of the
windows or sash when pivoted to its final resting position,
whether the pivoting be slight or great. The pivoting of
course, must be greater than an angle theta as illustrated in
relation to Figure 6G which is the angle or number of degrees
within which the beads B9 will engage with the openings C2. It
has been determined in a preferred embodiment that this angle is
approximately 9 and thus in this embodiment if the window is
pivoted for an angle of greater than 9 it will lock. In the
past, windows have pivoted up to 26 without being locked and
this has created problems for window hardware manufacturers in
that the pivot pins may dislodge from the corresponding cam
-
- 31 - 2G13774
slots. By min;m;zing the amount of degrees of freedom for the
pivoting of the window, the window is held in locked position
for a greater amount of time with greater security. The beads
B9 and B10 and the recesses Cl and C2 may be of significant size
in order to cause the deflection of the legs Bl and B2 and yet
of small enough size that the locking angle or degrees of
freedom is kept to a minimum.
Referring now to Figures 6H and 6I, a specific
advantage of the instant invention is illustrated incorporating
the advantages of Figures 6F and 6G wherein a block is provided
B at the end remote the pivot of the window sash, the bock being
interconnected as best illustrated in relation to Figure 7a with
the block of the pivoting aspect. However, the block in Figure
6H and 6I when interconnected with the block of Figure 6F and 6G
provides a tight and supportive bracing structure for the window
sash when sliding as illustrated in Figure 6H, wherein the sash
portion 35i having an arcuate end portion Al compatible with the
arcuate end portion of the handle Ha prevents the window sash
from pivoting but r~m~;n.s in a locked position to allow for the
bracing and thus the uniform sliding of the sash within the
tract T. However when the handle affixed to the cam via a pin
(not shown) connected to slot C2 is rotated in a direction P3,
it will as illustrated in relation to Figure 6G cause the
locking of the carrier B in position as the handle is rotated to
the position illustrated in Figure 6I while unlocking the window
as the arcuate surfaces Al and Ha are disjointed. The window
sash 30 will then be free to rotate in a direction P4 and will
be locked in position upon its pivot as illustrated in relation
to Figures 6F and 6G while the bracing block is locked in
position awaiting for the movement of the sash 30 back into
- 32 - 2 0 1 3 7 7 4
locking engagement with the handle portion H. The bracing
portion or block B prevent any movement of the pivot portion
upon which the sash 30 is pivoting and thus prevents the
dislodging of the pivot pin or the sagging of the window to any
substantial extent. This is important so that the portion of
the window proximate the arcuate portion Al will not ride on the
weather stripping disposed on the bottom portion of the sash 30.
It has been found in the past that with other pivoting windows
after a certain amount of time the weather stripping at the end
remote the pivot begins to take a lot of abuse and the window
begins to ride upon it. By providing a window structure which
has a roller which further enhances the movement of the block
and by providing a window structure which rides directly upon
the blocks and not upon the weather stripping the integrity of
the weather stripping is maintained for a greater period of time
and the maintenance of the window is thereby reduced. This is
clearly observed in relation to Figure 7b.
Referring now to Figure 7b, the aspect described above
is clearly illustrated, wherein the portion of the sash 30 being
supported upon a pivot pin Hdl and upon a block Bd riding upon a
roller Rd within a channel attached to the sill framing portion
27 wherein members 27i and 27ii describe a channel within which
the block Bd rides. The weather stripping 37a is clearly
observed as a portion of the bottom of sash member 30 which
rides upon the pivot pins Hdl, for example, leaving the weather
stripping in a much more reliable state not found within the
prior art.
Referring now to Figure 7a, there is illustrated in
exploded perspective view the window sash 30 being of generally
rectangular form and having horizontally extending sections 32
- 20 1 3774
and 37 and vertically extending portions 35. Disposed upon the
top and bottom of sections 32 and 37 respectively are weather
stripping portions 32a and 37a the use of which has already been
herein described in relation to Figure 7b. A pivot pin Cpl and
Cp2 are disposed at one end of the window assembly proximate the
blocks Ba and Bc respectively. These pivot pins are
substantially rectangular in shape and cooperate with the
openings Ca2 and Cc2 found within the cams Ca and Cc
respectively. Thus the interconnection between the sash and the
pivot blocks are through the pivot pins Cpl and Cp2. At the
other end of the sash assembly and interconnected to the locks
Ba and Bc are blocks Bb and Bd located at the top and bottom of
the window sash respectively. The blocks Bb and Bd have pivot
pins Hbl and Hdl extending into the cam openings Cb2 and Cd2 of
cams Cb and Cd respectively. The handle portions Hb and Hd are
connected to the pivot pins Hbl and Hdl respectively. The
handle portions have arcuate portions Ha disposed remote the
portion wherein an operator will grasp the handle.
The arcuate portions Ha extend into the arcuate
portions of 35i disposed within the vertical sections 35 of the
sash 30. Thus the arcuate portion Ha locks the window in
position for sliding purposes only and prevents the pivoting
thereof when the handle Hb and Hd extend in a line parallel to
the extension of the length of the blocks Bb and Bd.
Interconnecting the blocks sa and Bb are two horizontally
extending flat bars Fl and F2 interconnected at a fastening
screw and nut Vl and V2 extending through an opening within the
flat bar F2 and through a slot F6 of the flat bar Fl. The slot
of course, allows for the adjustability of the hardware when
dealing with windows of alternative widths. It has been found
, ~
20 1 3774
_ - 34 -
that by providing standardized hardware and merely changing the
distances which they are spread apart, the instant invention can
apply to windows from 12 inches to windows of 48 inches and
beyond. When windows of 48 inches and beyond are considered it
is advantageous to provide more than two blocks of the
essentially same characteristics as those found within Figure 7a
with the advantage that the additional blocks assist in the
sliding of the window and in the bracing of the window, the
blocks in the central portions being of essential neutral
ability not incorporating pins in one embodiment, thereby
serving only as a sliding aid. For purposes of illustration,
the rollers have been left out of the description in relation to
Figure 7a as they were described clearly in relation to Figures
6F through 6I. The purpose of Figure 7a is to illustrate the
interconnection of the blocks.
Blocks Bc and Bd are interconnected in similar manner
to the blocks Ba and Bb. Thus, a flat bar F3 and F4 are
provided with a pin and nut arrangement V3 and V4 extending
through an opening through the top of flat bar F4 and extending
through a slot F5 within the flat bar F3 which again gives the
adjustability of the distances between the blocks. Portions
Ball, Bbll, Bcll, and Bdll (not shown) are provided within the
blocks to allow for the interconnection of the flat bars Fl, F2,
F3, and F4 respectively which are fastened by a pin or
alternative fasteners. It is important that the fastening be
secure and the flat bar strong. Of course as is well known in
the art, channels located upon the header and sill portions 22
and 27 are provided having a top and bottom 22b and 27b
respectively and vertically extending sidewalls 22i, 22ii, 27i
and 27ii respectively, having a surface 22a and 27a upon which
- 35 - 2013774
the blocks will move upon the rollers.
Referring now to Figures 7c, 8 and 9 there is
illustrated a sequence of events which allows for the sliding of
the window within the channels as illustrated in relation to
Figure 7a upon blocks Ba, Bb, Bc, and Bd respectively
interconnected as illustrated in Figure 7a. Thus, when the
handle Hb and Hd are in a position such that the arcuate
portions Ha are securely locked within the recess or arcuate
portion 35a of the vertically extending section 35 of window
sash 30, the window sash 30 is only able to slide along the
channels 22i and 27i while the blocks and the pivot pins remain
in position such that the openings within which the pivot pins
are retained (which are emphasized for the purposes of
illustration in relation to Figures 7c, 8, and 9) and allow for
the movement of the window sash in slidable fashion only.
However, as illustrated in Figure 8, when the handles Hb and Hd
are rotated in a direction such that the handles extend in a
direction normal to the extension of the window, the blocks Bb
and sd will lock against the sidewalls 22i, 22ii, 27i and 27ii
respectively preventing the movement of the blocks Ba and Bc in
any slidable direction while the window sash 30 is free to pivot
as illustrated in relation to Figure 9, thus pivoting in a
direction B6 and has been clearly described in relation to
Figures 6F through 6I. When the window sash 30 begins to pivot
the sidewalls of the blocks Ba and Bc will engage the sidewalls
27i, 27ii, 22i and 22ii respectively by the motion of the cam
Ca, and Cc, in the direction such that the beaded portions of
the carrier will cause the legs Bal, Ba2, and Bcl, Bc2 to lock
against the side rail portions preventing the movement of the
window sash in a sliding direction and further as described
,1 `
~ - 36 - 2013774
above while ensuring the location of the blocks Bb and Bd when
the window is pivoted back to its sliding position. By the
blocks Ba and Bb being interconnected and the blocks Bc and sd
being interconnected, by the flat bar members, a firm bracing
system has been provided which prevents the movement of the end
of the window wherein the pivoting occurs proximate blocks Ba
and Bc and prevents the pins Cpl, Cpl from dislodging from the
cam openings and further eliminates the need to anchor them in
one embodiment of the invention. For safety sake to further
enhance the stability of the hardware the fastener to the pin
need not be eliminated but may be incorporated. However, the
window will not sag, nor will the ends at which the windows
pivot proximate the blocks Ba and Bc have a tendency to go out
of parallel with the window frame. Nor will the weather
stripping take a necessary load from the window as the window
will be securely held in an upright position upon the pivots
braced with the forward blocks or carriers Bb and Bd.
Thus the invention has provided a window assembly in a
preferred embodiment which slides and pivots incorporating block
mechanisms or carriers which allow for the sliding in
cooperative fashion and pivoting in cooperative fashion, some of
the pivots incorporating handle portions which lock the window
in its sliding position and which unlock the window from its
aligning position but simultaneously lock the pivoting block in
position as a result by locking the handle block in position.
Rollers have been provided to more uniformly advance the sliding
of the window sash within the tracks or channels.
It is of course understood that the alternative
embodiments of the invention would incorporate other closure
members such as patio doors which would operate in identical
,,
- 37 - 2 0 1 3 7 7 4
-
manner to that described in relation to the figures of the
vertical tilt slider illustrated in a preferred embodiment of
the invention. However, the hardware provided would be more
substantial in material but incorporate all of the design
5 features illustrated in the drawings. It is intended that any
tiltable and sliding closure device be construed as part of the
invention and the invention is thus not limited to windows
alone, but has broader application than described above.
Referring now to Figure 10, there is illustrated the
10 vertical tilt sliding window assembly of Figure 1, illustrating
the sash elements 30 and 40 being slidable within the tracks
disposed within a frame Fr and being pivotable upon blocks B in
direction D10 and D11 respectively, wherein the window glass 7
and 5 may be cleaned on both sides and pivoted back for sliding
15 movement within the tracks upon frame Fr. The pivoting movement
illustrated in relation to directions D10, and D11 simulate that
of French doors and of course have broad application in the
assembly of patio doors which normally only slide within a track
assembly, by improving patio doors embodied in the invention
20 described above using the hardware described above, a firm solid
pivoting assembly is provided which allow for the appearance of
French doors in many designs which may enhance the beauty of
patio door and vertically disposed tilt sliding windows.
Figures 11, 12, and 13 describe only three alternative
25 pivoting directions of the window sashes 30 and 40, that
described in Figure 13 being identical to that in Figure 10.
Thus the windows may be swung out in directions D12 and D13 or
may be swung inward in directions D14, and D15. The design of
the invention is to allow the greater flexibility for window
30 manufacturers and to allow for a standardization of inventories.
,,
- 38 - 20 1 ~7~ ~
It is not important as to which extrusions are used for the
framing sections. Further, it is not important as to what guide
channels are provided. The invention may be applied to any
window design and to any sash design providing the features
described herein are incorporated into the design and that the
shoe or carrier is dimensioned so as to ride within the guides
or channels provided within each individual window design. The
flat bars may come in one piece or in sections to allow for
variation in the size of windows and it is at the present,
determined that three sizes of hardware may be supplied to
provide for all window sizes presently in the marketplace.
However, this is not stated as a limiting aspect of the
invention as any new development or unique window design may be
incorporated and embodied with the unique hardware of the
present invention.
In an embodiment as illustrated in Figure 5A, 6E,and
6F-M the clamping surfaces B3, B4 of Figure 6G include a braking
element Bp which is generally L shaped in cross section and
includes a portion Bp2 which includes the braking surfaces
including pebbles Pl and a portion Bpl which engages the recess
of the shoe Byl and By2. The braking surface includes metal
inserts having a generally rectangular shape and having a
pebbled surface. On the face of the clamping surfaces B3, and
B4 there is a cut out or opening in which these inserts may be
fastened. These inserts behave as brake pads and improve the
performance of the entire system by ensuring a positive braking
action much the same as brake shoes of an automobile.
To ensure the positive braking action of the system
and referring to figures 6k,L, and M there is provided a recess
in the side of the shoe B proximate the track Ty , The recess
~J
- 39 ~ 2013774
Byl including a generally rectangular perimeter for reception of
the braking element Bp. Proximate the rear of recess Byl is
provided a generally arcuate portion Bx which in use contacts
portion Bpl along the edge thereof as best seen in relation to
figure 6L and M. The contact is made tangentially to the braking
element Bp which floats in the recess Byl to ensure the
orientation thereof in relation to the surface of the track Ty
being engaged. As best seen in figure 6M when a force Fc is
provided from the cam the locking portion of the shoe as
described in relation to figure 6G including the arcuate portion
Bx engages the braking element Bp at the braking surface thereof
to engage the pebbles Pl with the surface of the track Ty, The
arcuate portion ensuring the orientation of the brake element Bp
in a plane substantially aligned with the surface of the track
being engaged.
Referring now to figures 14 through 21 there is
illustrated a pivot shoe indicated generally as 100 being
generally rectangular in shape. The shoe 100 has a carrier
portion 110 having rollers disposed proximate the bottom
thereof. Affixed to one end of the carrier portion 110 of shoe
100 is a clamping portion 120 which is connected to the body of
the carrier by a flexible thin portion 121 and a fastener Fl.
The clamping portion 120 includes recesses 131 which carries
braking elements 130 the use of which has been described above.
The use of braking element 130 is analogous to the previous
description of figures 6F,G,H and I. The braking surfaces 130
are carried in the recess 131 disposed with portion 122 which is
attached via the thin flexible portion 121 to allow flexing of
the brake surfaces , the use of which will be described
hereinafter.
.; ~
- 40 - 2 0 1 3 774
A moveable clamping portion 160 is disposed within an
opening 125 separating the two portions 122 carrying the braking
surfaces 130. The clamping portion 160 is manufactured from
glass filled nylon in order to ensure the strength thereof.
Glass filled nylon finds particular application with the
clamping surfaces because of the clamping surfaces improved
resistance to creep under the pressures developed over nylon
alone or plastic materials. The balance of the shoe may be made
from less hardy materials provided the materials subjected to
loads will not creep and lessen the performance of the unit. The
Clamping member 160 includes clamping flanges 165 which clamp
flanges 175 of track 170 between clamping element 165 and
braking surface 130. In order to move the clamping member up and
down so as to provide the clamping action of the flanges 175
between element 165 and element 130 , a handle portion 140 is
provided which operates within the opening 125 of the clamping
portion 120. Disposed at one end of the handle 140 is a cam
portion 150 having an offset mounting as best seen in relation
to figure 17 and being carried within openings 161 of the
clamping member 160 and openings 132 of clamping element 122 by
offset pins 151. The offset pins are allowed to travel within
openings 132 as a result of the cam surface 152 abutting the
opening 161 of clamping portion 160 and pushing it in a vertical
direction so as to move the clamping flanges 165 towards and
away from the flanges 175 of track 170.
The seperation between the braking surfaces 130 and
the clamping flanges 165 is sufficient to allow free
unrestrained motion of the shoe in the track 170 until such time
as the handle 140 is moved from the position illustrated in
figure 18 to a position illustrated in figure 20. In moving the
,~..--,
- 41 - 2013774
-
handle 140 the cam 150 is moved as well to allow the cam surface
152 to push downward on the clamping element 160 via openings
161 and to clamp the flange 175 of the track 170 between the
clamping element 165 and the braking element 130. The braking
element is provided only on the bottom of the track as the use
thereof tends to pit the flanges 175 which are invisible on the
bottom of the flanges 175. If the braking elements 130 are left
out of the structure it is recommended that the braking surface
130 be formed from materials such as glass filled nylon to
prevent creeping action of the surfaces under the clamping
pressure.
The handle 140 has a second purpose as best seen in
relation to figures 15 and 16. The closure member 181 includes a
sash retainer portion 180 therewith to receive the handle 140
when the handle is in the position illustrated in figure 14.
Therefore when the shoe 100 is not locked to the flanges 175 and
the window 181 can slide in the track in the direction shown
similar to the operation described in relation to figure 7A and
7B. When the handle 140 is released from the retainer 180 and
generally in the position illustrated in figure 16 then the
flanges 175 are clamped between elements 165 and 130 of the shoe
100 and the closure member is free to rotate or pivot away from
track 170 in a direction Dyl.
Referring now to figures 22A and 22B there is
illustrated a pivot shoe 100 as described above interconnected
with a pivot shoe lOO(a) , interconnected for the same
advantages as described in relation to figure 7A etc. Provided
with the shoe lOO(a) is a cam portion 510 which is engaged to
the pivot pin 181(a) via the opening 511. When the handle 140
is disengaged from the sash retainer 180 of closure member 181
- 42 - 2G13774
then the window is free to pivot away from the track (not
shown). In pivoting as with the structure of figures 6G and 9 ,
the cam will cause the braking elements 500 and 501 to move
towards one another thus capturing the flange 175, not shown,
and securing the closure member in the track.
Cam portions 510 and 512 have oppositely oriented ramp
surfaces 510(a) and 512(a) disposed therewith upon which the
pins 502 ride to cause the motion of the braking elements
towards and away from the flange 175, not shown. Because of the
presence of brake pads including pebbled portions P2 and P3 this
structure may be used with aluminum window assemblies.
Referring to figure 22 there is illustrated a pivot
shoe 210 used for a double hung window assembly as illustrated
in figures 3 and 4. This shoe 210 incorporates the clamping
action previously described in relation to track 170 at flange
175. Of course however the structure is modified to be
incorporated in a double hung window. A cam portion 200 is
provided in the shoe 210 having a slot 201 disposed with the
shoe to receive the pivot pin of the window. When the cam is in
the position shown in figure 22 then the pin cannot be released.
The cam 200 is disposed in an opening 221 in the shoe 210. The
opening has disposed about it's perimeter an interupted thread
220 which if continuous would describe a helical thread. The
cam portion 200 has mating threads 226 disposed therewith to
mate with the threads 220 of the shoe 210. srake shoe elements
224 are provided for similar use as previously described. A
balance slot 223 is provided with the shoe which is provided at
the end of the shoe opposite the cam 200. Guides 222 allow for
ease of assembly.
The cam 200 includes clamping surfaces 225 which clamp
_ - 43 - 2 0 1 3 7 7 4
the flanges 175 between itself and braking elements 224 when the
cam is rotated by the action of the window pivoting. The helical
threads on the cam 226 and the shoe 220 allows for the vertical
motion of the clamping surfaces 225 in relation to the braking
surfaces 224 when the cam is rotated. Therefore the braking
surfaces 225 are rotated in and out of orientation with the
braking surfaces 224. When the braking surfaces 225 and 224 are
parallel to one another then flange 175 , not shown, is clamped
and thus the window locked only when the window is pivoted away
from the track as seen in figure 4. When the window is in the
track as shown in figure 3 , then the surfaces 225 and 224 are
not oriented so as to provide clamping action, but are
separated.
Referring now to figures 23A and 23B there is
illustrated an alternative embodiment of the invention when the
track 320 does not have flanges similar to 175 provided
therewith and it is still desirable to clamp the upwardly
extending flanges 321. Therefore a shoe 300 is provided which
includes a cam portion 303 which is anchored in an opening 302
of the shoe 300 by rim portions 304 to retain the cam 303 in the
opening 302. A handle 301 is integrally provided with the shoe
similar to the handle of figure 7A at the end of the window
opposite the pivot. By turning the handle in figure 23A or by
pivoting the window on pin 345 of figure 23B the cam portion 300
and 340 respectively will rotate causing portions 310 and 340 to
spread and cause brake pads 311 to engage the side of the track
321 braced by the clamping portion 331 to clamp between 331 and
311 the flange 321. The clamping portion 330 is made from glass
filled nylon for the same reasons set out above. the portion 330
is fixed in position and does not move in relation to the
- - 44 - 2 0 1 3 7 7 4
assembly being fixed on the shoe by portions 346 as best seen in
relation to figure 23B.
Referring now to figures 24A,B and 25 there is
. illustrated an alternative embodiment of the invention which
provides double locking action of a pivot shoe. Therefore the
structure shown will lock the shoe in position when the window
is parallel to the track and also when the window is moved away
from the track as described in relation to figure 6I. The
structure of figure 6I is incorporated to provide a lock which
engages the sides of the track when the window is pivoted and
which may provide security locking of the window in any of it~s
sliding positions except when fully closed.
Shoes Al, A2, and A3 are therefore provided which are
interconnected by portion 401 for the reasons already described.
Rollers 405 are provided with the shoe. Cam portions 435 are
provided which operate as previously described. For example a
handle 436 is provided to engage the action of the cam 435.
Referring to figure 24B a handle 446 is provided
similar in construction to handle 140 of figure 17 , and having
a cam 440 at one end. The handle 446 is held in a sash retainer
WR when the window is free to slide. When the handle is pushed
down to the locked position then the window can not slide. This
is because the cam 440 causes the portions 422 and 421 to press
against the top and bottom of the rail which includes portions
175 as illustrated in figure 17. In essence therefore the
operation is similar to the operation of the structures of
figure 7A with the exception that the security locking is
provided against the top and bottom of the track. Alteratively a
more complex handle arrangement may be provided to ensure that
the sash retainer is still engaged when the security lock is
~.~
20 1 37 7 4
engaged.
Therefore as illustrated in figures 26 to 31 a double
handled unit is provided for inclusion into the structures of
. figures 24A, 24B, and 25 and specifically in the position shown
with respect to the pivot shoe A3. Two components 441 and 442
make up the cam assembly 440 which can move simultaneously or
separately. If both the handle portions 436a and b are contained
within the sash retainer as exemplified by figure 28 then the
window is not locked. In the position of figure 29 and 31 the
window cannot slide, the security lock having been engaged by
motion of handle 436b while the window is retained in the sash
retainer by handle 436a. In figure 30 the window is free to
pivot but may lock by cam 435 as previously described.
As many changes can be made to the preferred
embodiments of the invention without departing from the scope or
intent thereof; it is intended that all matter contained herein
be considered as illustrative of the invention and not in a
limiting sense.
f;
