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Патент USA US3048229

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Aug. 7, 1962
A. L. HUBBARD
-
3,048,219
CLOSURE DEVICE
Filed July 13, 1960
INVENTOR.
A.'L.HUBBARD
ATTORNEY
United States Patent 0 "ice
2
1
3,048,219
CLOSURE DEVICE
Arthur L. Hubbard, Des Moines, Iowa, assignor to Deere
& Company, Moline, Ill., a corporation of Delaware
Filed July 13, 1960, Ser. No. 42,633
4 Claims. (Cl. 160-217)
3,048,219
Patented Aug. 7, 1962
parent, of providing a gripping means for the ?ngers.
The ?anges 22, 23 are also provided with centrally lo
cated alined openings 24, 25 through which a bolt 26
may extend. Beneath the lower ?ange 23 and surround
ing the bolt 26 is a spring 27. A nut 28 and a suitable
washer 29 lock the spring 27 on the shank of the bolt
and between the washer 29 and the lower surface of
This invention relates to a closure structure for an
the ?ange 23. As is clearly apparent, the bolt 26, spring
opening in a wall. More particularly this invention re
lates to a closure structure which may be easily and
27, nut 28, and washer 29 operate as means yieldably
connecting the ?anges 22, 23 and as biasing means for
maintaining the panels 16, 17 in a common vertical
quickly removed from and replaced in the opening.
The object of the present invention is to provide a
collapsible device which normally closes .an opening in
plane.
a wall and which may be removed from the opening
Should it be desired to remove the closure device 15
The closure device operates in the following manner.
merely by pulling the device away from the opening. 15 from the opening, the ?ngers are inserted under the down
wardly inclined ?ange portion 23a and the entire closure
However, it is desirable and it is also an object of the
present invention to incorporate in the device character
istics which will maintain it in a locked position so that
it will not inadvertently collapse or otherwise fall from
the opening so as to expose the opening.
device is drawn away from the wall 10. The spring 27
will permit the panels 16, 17 to collapse from the ver
tical plane and consequently the panels 16, 17 will pivot
relative to one another on the abutting edges 18, 19.
Speci?cally, it is the object of the present invention
Upon the panels 16, 17 moving to a position in which
to provide a closure device for a rectangular-shaped
at least one of the ?ared upper or lower edge portions
20, 21 clears its respective edge 13 or 14, the closure de
opening which is composed of a pair of panels having
vice may be removed from the opening. Upon it being
abutting edges and which lie generally in a plane parallel
to the plane of the wall. Each of the panels is provided 25 desired to replace the closure device 15, it is necessary
to place one of the ?ared edge portions 20, 21 in its
with one edge which is ?ared to ?t behind the wall and
outer edges which ?t outside the wall. Fixed to the
abutting edges of the panels and extending outwardly
from the wall are a pair of integral ?anges which lie side
by side. The ?anges are joined together by bolt means
which are spring loaded so as to resistably permit separa
tion of the ?anges. The ?anges are further provided at
their outer edges with the ?ared portion under which a
hand may be inserted so as to draw the ?anges outwardly.
behind-the-wall position and to manually bend or col
lapse the device 15 so that the opposite ?ared edge por
tion 26) or 21 may pass by the opposite edge 13 or 14
of the opening. Upon both edges 20‘, 21 being posi
tioned behind the wall 10, the closure device 15 may be
released and the spring 27 will snap the panels 16, 17
into the closed position or substantially the position in
which the outer edges of the panels 16, 17 contact the
Consequently, the two panels are permitted to collapse 35 outer surface of the wall 10.
While only one form of the invention has been shown,
so that the edges of the panels which normally rest be
it should be understood that other forms and variations
hind the wall may be moved into the opening and the
will occur to those skilled in the art. Consequently,
entire device removed from the opening.
while the preferred form of the invention was shown in
Other objects and advantages of the present invention
Will become apparent to those skilled in the art as the 40 concise and detailed manner for the purpose of clearly
and concisely illustrating the principles of the invention,
nature of the invention is better understood from the
it should be recognized that it was not the intention to
following description and as shown in the accompanying
drawings.
FIG. 1 is a view of a portion of a wall having an
opening therein and a closure device for closing the 45
opening.
so limit or narrow the invention beyond the broad con
cept set forth in the appended claims.
What is claimed is:
l. A closure device for a rectangular-shaped opening
in a wall having inner and outer surfaces, comprising: a
FIG. 2 is an exploded perspective view of the wall
pair of panels disposed in a plane substantially parallel to
and the closure device.
the wall and having abutting edges and edges opposite
FIG. 3 is a sectional view taken substantially along
50 the abutting edges ?ared inwardly and resting behind
the line 3,—3 of FIG. 1.
the Wall adjacent one pair of parallel edges of the rec
Referring now to the drawings, there is provided a
tangular opening, said panels further having portions
wall 10 having a rectangularly-shaped opening formed by
thereof extending beyond the other pair of parallel edges
a pair of parallel upright edges 11, 12 and a pair of
of the rectangular opening and resting against the outer
The closure device, here indicated in its entirety by 55 surface of the wall; a pair of ?ange portions integral
parallel horizontal edges 13, 14.
the reference numeral 15 is composed of upper and lower
panels 16, 17 having horizontally disposed abutting edges
with the panels extending in a normal direction out
wardly from the abutting edges of the panels; and means
connecting the ?ange portions yieldably resisting separa
18, 19. The panels 16, 17 also have upper and lower
tion of the ?anges whereby said panels may yield away
edge portions 20, 21 which are ?ared inwardly to nor
mally rest behind the inner surface of the wall 10. In 60 from the aforesaid plane to permit at least one of said
?ared edges to be moved to and from behind the wall.
this respect, it should be recognized that the normal dis
2. A closure device for an opening in a wall having
position of the panels 16, 17 is such that the main por
tions of the panels 16, 17 lie in a plane substantially
inner and outer surfaces, comprising: a pair of panels
parallel to the plane of the wall 10. The panels 16, 17
disposed substantially parallel to the wall and having
extend beyond the edges 11, 12 of the opening so that 65 abutting edges and edges opposite the abutting edges
the opposite vertical edge portions of the panels 16, 1'7
normally rest on the outer surface of the wall 10». The
?ared inwardly and resting ‘behind the wall, said panels
further having portions thereon resting against the outer
surface of the wall; a pair of ?ange portions integral with
panels 16, 17 are provided with ?anges 22, 23 extending
the panels extending in a normal direction outwardly
in a normal direction outwardly from the abutting edges
18, 19_ of the panels. Outer ends 22a, 23a are turned 70 from the abutting edges of the panels; and means con
downwardly for the purpose, as will later become ap
necting the ?ange portions yieldably resisting separation
3,048,219
3
of the ?anges whereby said panels may yield away from
the aforesaid plane.
3. The invention de?ned in claim 2 in which: the
means connecting the ?anges is a bolt and nut combina
tion extending through the ?anges and having a spring 5
A
ing ?ared portions at their outer ends so that ?ngers may
be inserted behind the latter portions for‘drawing the
panels from their normal biased position.
References Cited in the ?le of this patent
on the shank of the bolt effective to bias the ?anges to a
UNITED STATES PATENTS
normal closed and side by side disposition.
4. The invention de?ned in claim 2 further character
ized by the ?ange portions having downwardly extend
2,45 3 ,274
2,604,224
Serowy ______________ .__ Nov. 9, 1948
Howe ______________ __ July 22, 1952
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