U.S. patent number 3,654,982 [Application Number 05/038,286] was granted by the patent office on 1972-04-11 for protective grille.
This patent grant is currently assigned to Dynaflair Corporation Ltd.. Invention is credited to Henri Marcel Robert Labelle.
United States Patent |
3,654,982 |
Labelle |
April 11, 1972 |
PROTECTIVE GRILLE
Abstract
A folding closure having an open pattern curtain formed from a
plurality of rods and panels interconnected together. The curtain
is movable between open and closed positions supported by an
extensible hinge. The hinge is constructed to permit the curtain to
follow a curved track when in the open or folded position. Both the
hinge and curtain are supported by frames in the opening to be
closed, some of which have a reversible wall panel permitting the
frame to be used at different locations to support the curtain
either at its ends or intermediate its ends.
Inventors: |
Labelle; Henri Marcel Robert
(Greenfield Park, Quebec, CA) |
Assignee: |
Dynaflair Corporation Ltd.
(Pointe Claire, Quebec, CA)
|
Family
ID: |
4085896 |
Appl.
No.: |
05/038,286 |
Filed: |
May 18, 1970 |
Foreign Application Priority Data
Current U.S.
Class: |
160/199; D25/138;
160/206; 160/229.1; D25/119; D25/153; 160/213 |
Current CPC
Class: |
E06B
9/063 (20130101); E06B 9/0653 (20130101) |
Current International
Class: |
E06B
9/06 (20060101); E05d 015/26 () |
Field of
Search: |
;160/84,199,206,213,229 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Bell; J. Karl
Claims
I claim:
1. A folding closure comprising: a foldable curtain, having first
and second opposed side edges, the curtain including a plurality of
support rods and a plurality of panels, rod-receiving means on
opposed sides of each panel, said panels being mounted on said rods
by the rod-receiving means to form an open pattern when the curtain
is unfolded, an extensible hinge, means suspending said curtain
from said hinge, means connecting the first side edge of said
curtain to a first frame member, means connecting the second side
edge of the curtain to a second frame member, comprising a tubular
body member having side walls and end walls, each end wall
including a removable wall panel, cooperating means on said end
wall and panel for slidably mounting the panel on said end wall to
form a part thereof, one face of said panel being planar, the other
face of said panel having tubular sections carried thereby, said
tubular sections forming a portion of the means connecting the side
edges of the curtains to the first and second frame members, and
means movably suspending said second frame member and the
extensible hinge from a third frame member.
2. A folding closure as claimed in claim 1, wherein said panels
forming part of the curtain comprise rectangular plates, and said
rod-receiving means comprise tubular sections attached to two
opposed side edges of the plate.
3. A folding closure as claimed in claim 2, wherein said means for
connecting said curtain to said frames include the tubular sections
on the reversible wall panels, selected tubular sections on said
panels forming part of the curtain, and a pivot rod threaded
through said tubular sections on said reversible wall panels and on
said curtain panels.
4. A folding closure as claimed in claim 2, wherein said tubular
sections on one plate, mounted on a first pair of adjacent rods,
support the tubular sections of plates mounted on a second pair of
adjacent rods, one of the rods of the first pair and one of the
rods of the second pair being the same rod.
5. A folding closure as claimed in claim 1, wherein said hinge
comprises a chain of first links, means pivotably connecting the
links together at their ends, secondary hinges, each comprising a
pair of second links substantially half the length of the first
links and joined together at one end by a pivot pin, the free end
of each second link joined to the center of a first link whereby
each pair of first links has a secondary hinge joined to it.
6. A folding closure comprising: a foldable curtain, having first
and second opposed side edges, the curtain including a plurality of
support rods and a plurality of panels, rod-receiving means on
opposed sides of each panel, said panels being mounted on said rods
by the rod-receiving means to form an open pattern when the curtain
is unfolded, an extensible hinge comprising a chain of first links,
means pivotably connecting the links together at their ends,
secondary hinges, each comprising a pair of second links
substantially half the length of the first links and joined
together at one end by a pivot pin, the free end of each second
link joined to the center of a first link whereby each pair of
first links has a secondary hinge joined to it, means suspending
said curtain from said hinge, means connecting the first side edge
of said curtain to a first frame member, means connecting the
second side edge of the curtain to a second frame member, and means
movably suspending said second frame member and the extensible
hinge from a third frame member.
7. A folding closure as claimed in claim 6, wherein a support rod
extends from each pivotal connection between the first links, and a
support rod extends from each first link where the free end of each
second link is joined to the first link.
8. A folding closure as claimed in claim 6, wherein all the pivot
pins joining the second links of the secondary hinges are located
on one side or the other of the chain of first links.
9. A folding closure as claimed in claim 6, wherein the means for
suspending the curtain includes a plurality of hangers, said third
member having a track, means on the hangers movably mounting them
in said track, there being one hanger connected to every second
first link.
10. A folding closure comprising: a foldable curtain, having first
and second opposed side edges, the curtain including a plurality of
support rods and a plurality of panels, rod-receiving means on
opposed sides of each panel, said panels being mounted on said rods
by the rod-receiving means to form an open pattern when the curtain
is unfolded, an extensible hinge, means suspending said curtain
from said hinge, means connecting the first side edge of said
curtain to a first frame member, means connecting the second side
edge of the curtain to a second frame member, and means movably
suspending said second frame member and the extensible hinge from a
third frame member, including an intermediate frame member located
between said first and second frame members, said intermediate
frame member having end walls with a removable, reversible wall
panel forming a section of each end wall, tubular sections on one
face only of the wall panels, said panels mounted so said tubular
sections face outwardly, said curtain being divided into two
sections, means connecting one free edge of each curtain section to
the tubular sections facing outwardly from the intermediate frame
member, the opposed edges of each curtain section connected to the
first and second frame members.
11. A folding closure as claimed in claim 10, wherein the
intermediate frame member includes a locking device, means mounting
said locking device within said frame member, said locking device
including a pin movable vertically downwardly from a raised,
unlocked position to a locked position where the end of the pin
rests in a depression formed in a floor.
12. A folding closure as claimed in claim 10, wherein said hinge
comprises a chain of first links, means pivotably connecting the
links together at their ends, secondary hinges, each comprising a
pair of second links substantially half the length of the first
links and joined together at one end by a pivot pin, the free end
of each second link joined to the center of a first link whereby
each pair of first links has a secondary hinge joined to it.
Description
BACKGROUND OF THE INVENTION
1. Field of Invention
This invention relates to an improved, foldable closure.
More particularly, the invention is directed to a foldable closure
having an improved frame means for mounting the curtain of the
closure, the curtain comprising structural elements arranged in an
open pattern whereby the closure can be used as a protective
grille.
2. Description of Prior Art
Foldable closures, particularly those having an open pattern
whereby the closure can be used as a protective grille, are known.
However, the known closures, in general, are constructed to extend
in a straight plane in the open or closed position and cannot
readily extend in a curved plane in an open or closed position.
Further, known closures are relatively expensive in that in
covering relatively long openings, additional curtain supports, of
a type different from those used at the ends of the curtain, are
required, thus increasing the cost.
SUMMARY OF INVENTION
Applicant's invention relates to an improved closure which can
extend along curved openings in the open or closed position and is
less expensive to manufacture and assemble, particularly in extra
long lengths.
The improved closure of the invention can be manufactured more
cheaply than known closures since certain of its parts are
standardized and thus interchangeable, and the closure can be made
in various lengths without requiring special parts for
reinforcement or support while still providing adequate strength to
serve as a barrier device. The improved folding closure comprises a
foldable curtain having first and second opposed side edges. The
curtain includes a plurality of support rods and a plurality of
panels with rod-receiving means on opposed edges of each panel. The
panels are mounted on the rods by the rod-receiving means to form
an open pattern when the curtain is unfolded. The curtain is
suspended from an extensible hinge. A first side edge of the
curtain is connected to a first frame member, and the second side
edge of the curtain is connected to a second frame member. The
second frame member and the extensible hinge are movably suspended
from a third frame member. The first and second frame members have
a removable, reversible, wall panel with elements on one face only
of the panel comprising a portion of the means for connecting an
edge of the curtain to said first and second frame members.
The invention further relates to the construction of the frame
members used in the closure. At least one of the frame members
comprises a tubular member which is rectangular in cross-section.
At least one of the walls of the tubular member includes a
removable panel which can be reversibly mounted in the member. The
panel has rod-receiving means projecting from one face, the other
face being planar.
The invention also relates to means for locking the curtain in
place when extended across an opening and also means for providing
additional support for the curtain intermediate its ends.
The invention further relates to the structure of curtain using a
combination of panels and spacer elements in combinations with
support rods, to form an open pattern defining the body of the
curtain.
The invention still further relates to an improved extensible hinge
means for supporting the curtain, which hinge means is constructed
to follow a straight or curved path when extended or retracted.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described in detail, having reference to
the accompanying drawings, wherein:
FIG. 1 illustrates the folding closure extending across an
opening;
FIG. 2 is a cross-sectional view of the folding closure taken along
line 2--2 of FIG. 1;
FIG. 3 is a partial cross-sectional view of a frame member
connected to one side edge of the curtain of the folding closure,
illustrating locking means carried by the frame member;
FIG. 4 illustrates one of the preferred forms of the panels used to
form the curtain of the folding closure;
FIG. 5 illustrates an additional panel which can be used to form
the curtain of the folding closure;
FIG. 6 is a cross-sectional view taken along line 6--6 of FIG. 1,
showing, in detail, the means for movably supporting the curtain
and hinge means from a frame member;
FIG. 7 is a detailed schematic view illustrating a frame member for
the folding closure which has a reversible wall panel;
FIGS. 8, 9 and 10 illustrate the extensible hinge means supporting
the curtain, showing the hinge means fully extended, partially
extended and unextended, respectively;
FIG. 11 is a schematic view illustrating the extensible hinge
means;
FIG. 12 is a plan view of an extensible hinge means used in a
curved position;
FIG. 13, on the same sheet of drawings as FIG. 6, is a detailed
view in partial cross-section showing an intermediate frame member
for the curtain; and
FIG. 14, on the same sheet of drawings as FIG. 6, is a
cross-sectional view taken along line 14--14 of FIG. 13 of the
intermediate frame member.
DESCRIPTION OF PREFERRED EMBODIMENT
As shown in FIG. 1, the folding closure 1 includes a foldable
curtain 3, having an open pattern when unfolded and mounted to
unfold across an opening to provide a barrier across the opening.
The curtain 3 is connected at one side edge 7 to a first frame
member 9 mounted on or adjacent one edge 11 of a wall 13 defining
the opening. A second frame member 21 is connected to the opposite
side edge 23 of the curtain. The curtain 3 is supported from its
top edge by an expandable hinge means 15, the hinge means 15 and
second frame member 21 being movably suspended from a top frame
member 17 attached to or adjacent the top edge 19 of the wall
defining the opening. A fourth frame member 25 is mounted on or
adjacent a second side edge 27 of the wall defining the
opening.
The expandable hinge means 15 can be the well-known lazy-tong type.
Preferably, however, the hinge means is constructed to permit it to
travel along both a straight or curved path in the open or closed
position. The regular lazy-tong type hinge, employing a continuous
series of crossed interconnected links cannot follow a curved path
when closed or retracted because of its construction. The hinge
means 15, shown in FIGS. 8 to 12, can. The hinge means comprises a
first chain 29 of links 31 pivotably connected together at their
ends to each other by first pivot means 33A, 33B, etc. Each end of
the chain 29 terminates in a short link 35, 35' pivotably connected
by pivot means 33 to the free ends of the end links of the chain
and having half the length of main links 31. The free end of one of
the short links 35 is connected by a second pivot 39 to the first
side frame member 9. The free end of the other short link 35' is
connected by a third pivot 43 to the second frame member 21. The
links 31, 35, 35' are made of strip material and are connected
together with the first pivot means 33 extending transversely
through apertures in the ends of the strips.
Additional pairs 32A, 32B, etc. of short links 34 are provided
along the chain 29 of links 31, and attached thereto at
predetermined locations to provide secondary hinges. Preferably,
one secondary hinge, comprising two short links 34 pivotably
attached together at one end by a pivot pin 36, is connected
between each pair 38A, 38B, etc. of links 31 of the chain. The free
end of each short link 34 is connected by a pivot pin 45 to the
mid-point of each link 31 of a pair of links 38A, 38B, etc., as
shown in FIG. 9. The pairs 32 of the short links provide secondary
hinges assisting the first chain 29 of long links 31 to expand to
an open position, as shown in FIG. 8, and to retract to a folded
position, as shown in FIG. 10, in a uniform manner. The secondary
hinges are essential to ensure uniform folding of the links 31 so
that each link 31, in the folded position of the hinge means,
extends in the reverse direction of the preceding link 31. The
short links 34 are half the length of the long links 31.
The use of secondary hinges permits the hinge means 29 to follow a
curved path when in the folded position, as shown in FIG. 12. Using
only secondary hinges comprising pairs of short links at specific
locations rather than a second continuous chain of long links
crossing the links of the first chain, as is generally done in a
lazy-tong type of hinge, permits the pivot connections 33C, 33E,
33G, etc. of each pair 38A, 38B, etc. of long links 31 joined by a
secondary hinge to be spaced apart from one another, as shown in
FIG. 12, in order that the hinge means 15 can follow a curved path
when closed. This permits the closure to be used as a protective
grille for curved windows or openings. The secondary hinges are
located on one side or the other of the continuous chain 29 of
links depending on whether the hinge means 15 is to curve left or
right when in the folded position.
A short secondary chain 48 comprising a first short link 40, a long
cross link 42 and a second short link 46, joined at the ends, can
be used at the movable end or both ends of the hinge means 15 to
further assist the curtain in beginning to fold or unfold properly.
The links of the secondary chain 48, starting from pivot 43, run
oppositely to the links of the main or first chain 29. The links of
the short chain are pivotably connected together at their ends by
pins 50 and link 44, where it crosses the first long link 31 at its
center, is pivotably connected to it by pivot 45.
The hinge means 15 is movably supported from the top frame member
17. As shown in FIG. 6, the top frame member 17 has tracks 51. The
top frame member can comprise a U-shaped, inverted channel section.
Screws 57, passing through the base 59 of the channel section,
connect it to the horizontal edge of the wall defining the opening.
The ends 61 of the arms 63 of the channel section are bent inwardly
to form the tracks 51. A hanger 65 is supported from the top frame
member 17 by wheels 67 running on the tracks 51. The hanger 65
comprises a strip 69 loosely attached at one end to an axle 71
carrying the wheels 67. The lower end of the strip 69 has a
horizontal arm 73 with an aperture 75 in the arm to permit
connection of the hanger to the hinge means 15. The aperture 75 in
the arm 73 of the strip is centrally located between the wheels 67.
A plurality of hangers are connected to the hinge means 15 at the
center of selected links 31, preferably by the pivot means 45.
Preferably, one hanger 65 is connected to every second link 31 of
the main chain of links at the link's center by pin 45 as shown in
FIG. 9. This spacing ensures that the links of the hinge means will
properly fold when they are retracted through the guidance of the
hangers in the tracks 51. The hangers 65 could also be connected to
every third link 31 of the main chain provided that the two links
between the two links having hangers are connected together by a
secondary hinge. If the hangers are arranged on every third link so
that the two intermediate links are not joined by a secondary
hinge, the hinge means may not fold properly when retracted.
The hangers 65 are free to run along the tracks 51, guiding and
supporting the hinge means as it is expanded or compressed in
opening or closing the closure means. A bar 77 can be located
adjacent one arm 63 of the channel section and attached to the wall
to provide support for the channel section.
The curtain 3 is carried by the hinge means 15. The curtain 3
includes a plurality of rods 81 suspended from the hinge means 15.
One rod 81 is suspended from the chain 29 of the links, from each
first pivot means 33 and also from the center of each link 31. The
upper ends of the rods 81 pass through apertures in the links at
these locations and, together with a screw 83 and washer 85, are
loosely connected to the links to form the pivot means 33, and 45.
The rod end also passes through the aperture 75 in the hanger 65 to
connect the hinge means 15 to the horizontal frame 17 at selected
locations, as shown in FIGS. 1 and 6. The rods 81 are preferably
cylindrical although other rod shapes can be used.
The body of the curtain includes a plurality of panels 87 carried
on the rods 81 to form an open pattern.
Each panel 87, as shown in FIG. 4, can comprise rectangular plates
89. Each plate has a pair of rod-receiving means 91 formed on two
opposed side edges 93, 95 of the plate permitting the panels to be
threaded on the rods 81 carried by the hinge means. The
rod-receiving means 91 can comprise elongated, tubular sections 97
attached to the side edges of the plate. The plate and tubular
sections 97 are integrally molded or extruded from thermoplastic
material or can be extruded from metal material. Each tubular
section 97 can have a slot 99 to facilitate molding of the panel
87. The distance "A" between the axis of the tubular sections 97 of
each panel is equal to the distance "B" between the centers of
adjacent rods 81.
The inside diameter of the tubular section 97 is slightly larger
than the diameter of the rods 81 permitting the panels 87 to pivot
about the rods as the closure is expanded or compressed.
The panels 87 and rods 81 are assembled into a curtain by passing
the rods through the rod-receiving means on the panels with the
panels arranged in a predetermined open pattern as shown in FIG. 1.
By an "open pattern," it is meant an arrangement of panels with
spaces adjacent the edges of each panel. One type of open pattern,
as shown in FIG. 1, a first panel 87A is mounted on the first two
rods 81A, 81B. A second panel 87B is mounted on rod 81A by one
rod-receiving means 91B with its other rod-receiving means 91B
free. A third panel 87C is mounted on second and third rods 81B,
81C at the same level as the second panel 87B. This pattern is
repeated both vertically and horizontally to achieve a checkerboard
effect. The rod-receiving means 91B of the second panel 87B is
adjacent one of the rod-receiving means 91A of the first panel 87A
and spaces and supports the first panel from a fourth panel 87D
positioned on the first and second rods 81A, 81B. The rod-receiving
means 91C of the third panel 87C also aids in spacing and
supporting the first panel from the third panel. All the panels 87
are maintained in position on the rods 81 by means of screws 101,
having enlarged heads 103, threaded into an aperture in the lower
end of the rods, as shown in FIG. 6.
While one arrangement of rods and panels for the curtain has been
shown, other arrangements employing additional elements comprising
tubular spacers and/or narrow cross-pieces 105, as shown in FIG. 5,
can be used as well. The cross-pieces 105 comprise relatively short
tubular sections 107 attached to the ends of a narrow plate 109.
Slots 111 can be provided in the tubular sections 107 to facilitate
molding. The cross-pieces 105 can be used to close the open spaces
formed adjacent the top and bottom edges of the curtain when using
panels in a checkerboard pattern, as shown in FIG. 1, to provide
additional support.
Tubular spacers (not shown) of varying length can be positioned
between the rod-receiving means of adjacent panels to provide more
open patterns on the curtain. Each tubular spacer is mounted on a
rod between a tubular section on each of two panels to space the
panels apart a greater distance to provide a more open pattern in
the curtain. Panels of different length or different shape, such as
diamond or circular shape as compared to rectangular, can also be
used to form different patterned curtains. Various patterns can be
formed using different combinations of panels of different length
or shape, tubular spacers and cross-pieces.
The frame members 9 and 21 which support the end edges of the
curtain 3 are constructed from identical structural members. Both
frame members comprise a tubular body member 113 having side walls
115, 117 and end walls 119, 121. The side walls can be joined by a
transverse rib 213 extending between the centers of the side walls.
At least a portion of each end wall comprises a panel 123 which is
removable from body member 113 and which can also be reversibly
connected to the body member. The panel 123, as shown in FIGS. 2
and 7, has a central groove 125 in each side edge 127. Each groove
cooperates with a flange 131 extending from an edge 133 of the end
wall which edges define an opening closed by the panel when it is
slidably inserted in place with the flanges 131 in the grooves 125.
One face 135 of the panel is planar and rod-receiving means 137 are
attached to the other face 139 of the panel. The rod-receiving
means 137 comprise tubular sections 147, preferably having a slot
149, attached along the length of the panel. The panels 123 can be
mounted reversibly in the openings in the end walls 119, 121 of the
body member 113. In one position, the tubular sections 149 face
outwardly to receive a rod 151 used to connect a side edge of the
curtain to the frame member. In the reverse position of the panel,
the tubular sections 149 face inwardly between the side walls 115,
117 of the body member 113 with the planar face 135 of the panel
123 lying flush with the end walls 119, 121 of the body member 113.
The panels 123 are frictionally held in the body member 113.
As shown in FIG. 2, the first frame member 9 has one panel 123A
mounted with the tubular sections 149A extending inwardly so as to
present a planar end wall 119 to permit mounting of the first frame
member 9 flush against the edge 11 of the wall 13 defining the
opening. The opposite end wall 121 of the first frame member has
the panel 123B mounted in a reverse manner with the tubular
sections 149B on the outside of the frame member so as to receive a
first pivot rod 151A used to connect the member to the curtain. The
first frame member 9 can be attached to the edge 11 of the wall of
the opening by first fastening the panel 123A to the wall and then
slidably mounting the remainder of the panel member on the
panel.
The second frame member 25 is assembled in a similar manner as the
first frame member 9 with the tubular sections on one panel
extending outwardly to receive a second pivot rod 151B permitting
connection of the curtain and the tubular sections on the other
panel 123B extending inwardly to provide a planar end wall for the
second frame member.
The tubular sections 149 of the panels which face outwardly to
support the end edges of the curtain can be spaced apart to permit
mounting of a tubular section 97 of a panel 87 between each two
adjacent sections 149. The pivot rod 151 is then threaded through
both tubular sections 149 of the panels and the free tubular
sections 97 of the panels 87 to connect the curtain to the frame
member. A nut 153, threaded into a top threaded end 155 of the
pivot rod 151, retains the pivot rod 151 in place. The pivot rods
151 can also form the second and third pivot means 39, 41
connecting the hinge means to the frames.
The second frame member 21 preferably is movably suspended from the
tracks 51 of the top frame 17 by a hanger 157 having rollers 159
running on the tracks. A hook 161 at the bottom of the hanger
passes through a slot 163 formed in the transverse rib 213
connecting the side walls. When the second frame member is
assembled on the tracks, its length is such that it cannot be
lifted off the hook 161 passing through the slot 163.
The second frame member 21 can have a lock 167 mounted therein, as
shown in FIG. 3. In order to mount the lock, a portion of the
transverse rib 213 and a portion of the panel 123 adjacent the edge
of the wall is removed. The lock 167 is inserted in the space
within the second frame member and maintained in position by an
attached plate 168, attached by screws to the end wall of the frame
member. The latch 169 of the lock passes through a slot 171 to hook
over a bar 173 in the frame member 25 so as to lock the closure
when in an extended position.
The folding closure can be made in varying lengths. If it has an
extended length, however, it is preferable to provide one or more
intermediate frame members 181 to provide additional support for
the curtain. The intermediate frame members 181, shown in FIG. 13,
have the same type of construction as the frame members 9, 25,
supporting the ends of the curtain. Both panels 183, 185 on the end
walls 187, 189 of the body member 191 of the frame are slidably
mounted to have the tubular sections 193 for receiving the pivot
rods 195 facing outwardly to permit connection of the intermediate
side edges 197, 199 of the curtain 3. The intermediate frame member
181 is suspended from the tracks 51 of the top frame member 17 by a
hanger 201 similar to the hanger used to suspend the frame member
21. The hinge means 15 is divided into two sections and connected
to intermediate frame member by the pivot rods 195, in the same
manner as the ends of the hinge means are connected to the frame
members 9, 25.
A locking mechanism 203 can be provided at the lower end of the
intermediate frame member. The locking mechanism can comprise a
gear and ratchet device mounted within the body member 191 of the
intermediate frame member with the gear 209 mounted on a shaft
supported by the side walls of the body member and the ratchet 211
slidably carried by the transverse rib 213. Means, not shown, lock
the gear in place with the ratchet raised and a key can be used to
unlock the gear and then turn it to lower the ratchet so it extends
below the end of the intermediate frame and rests in a well or
depression 205 formed in the floor. The locking mechanism 203
prevents lateral movement of the curtain and extends to such a
length as to prevent raising of the curtain to an extent which
would permit entry underneath the bottom of the curtain.
* * * * *