U.S. patent number 3,834,107 [Application Number 05/380,598] was granted by the patent office on 1974-09-10 for device to repair damaged doors and walls.
Invention is credited to Clifford R. Standing.
United States Patent |
3,834,107 |
Standing |
September 10, 1974 |
DEVICE TO REPAIR DAMAGED DOORS AND WALLS
Abstract
A device for repairing a damaged double walled structure such as
a hollow-core door comprises a threaded shaft, a backing plate
integrally fixed to the shaft and in an operative use position
resting against the interior of a rear wall of the double walled
structure, a block member threadly mounted on the shaft, a screened
facing plate in an operative use position resting against the
interior of a front wall of the double walled structure, the shaft
being movably mounted to the desired adjusted position within the
length of an elongated slot of the screened plate and a pair of
rails on the screened plate and a grooved rail-receiving block
member movably mounted thereon. The various adjustable features of
the shaft, screened plate and block member provide a means of easy
insertion through the damaged wall portion and a means of securely
fastening the device in a selective position within the double
walled structure to provide a permanent and rigidly fixed backing
panel for a filling material such as a plaster.
Inventors: |
Standing; Clifford R. (Fair
Oaks, CA) |
Family
ID: |
23501794 |
Appl.
No.: |
05/380,598 |
Filed: |
July 19, 1973 |
Current U.S.
Class: |
52/514 |
Current CPC
Class: |
E04G
23/0207 (20130101); E04G 23/0203 (20130101) |
Current International
Class: |
E04G
23/02 (20060101); E04g 023/02 () |
Field of
Search: |
;52/514,127,365,345 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Faw, Jr.; Price C.
Attorney, Agent or Firm: Munz; Otto John
Claims
What is claimed is:
1. A device for repairing and for insertion through a damaged wall
portion of a double walled structure such as a hollow-core door
comprising in combination:
a threaded shaft means;
a flat backing plate means integrally fixed to one end of said
shaft means;
said plate means adapted to rest firmly against the interior of a
rear wall of the double walled structure;
a block member having a threaded opening therethrough for axial
mounting on said shaft means, said block member having groove means
on sides thereof;
a screened facing plate means positioned adjacent to said block
member and having a slot member, said screened plate means adapted
to rest firmly against the interior of a front wall of the double
walled structure;
said shaft means mounted transversely with respect to said block
member and said screened plate means and adapted to adjustably
slide in said slot member; and
a pair of rail members integrally fixed to the bottom side of said
screened plate means at the ends thereof and spaced in a parallel
manner with respect to said screened plate means, each of said rail
members being positioned in a parallel relationship to each other
on opposite sides of said shaft means, each of said rail members
slidably mounted within said respective groove means;
said device adapted to be securely fastened in a selective location
between the above-defined rear and front walls by tightening of the
threaded shaft means and adapted to constitute a permanent and
rigidly fixed backing panel structure for a filler such as
plaster.
2. A device according to claim 1, wherein said screened plate means
consists of a rectangular plate.
3. A device according to claim 2, wherein said slot means of said
screened plate means constitutes an elongated opening that
substantially extends the length of said rectangular plate.
4. A device for repairing a damaged double-walled structure such as
a hollow-core door comprising in combination:
a shaft having adjustable means thereon;
a backing plate integrally fixed to said shaft and in an operative
use position resting against the interior of a rear wall of the
double walled structure;
a block member axially and adjustably mounted on said shaft and
having grooves thereon;
a screened facing plate adjustably mounted on said shaft and in an
operative use position resting firmly against the interior of a
front wall of the double walled structure; and
a plurality of rail members integrally fixed to the bottom side of
said screened plate and each of said rail members adjustably and
slidably mounted in a respective groove;
said device adapted to be securely fastened in a selective location
between the above-defined rear and front walls by manipulation of
the shaft adjustable means and adapted to constitute a permanent
and rigidly fixed backing panel structure for a filler such as
plaster.
Description
FIELD OF THE INVENTION
The present invention relates generally to a device for repairing a
hole in a wall. More particularly, the present invention is
directed to a device for insertion through a damaged hole in a
double walled structure such as a hollow-core door, wall and the
like and for fastening therein to constitute a permanent and
rigidly fixed backing structure for a filler such as wood putty,
plaster and the like.
BACKGROUND OF THE INVENTION
At present, many devices exist for repairing holes in walls. Many
of the presently known devices include expansion anchoring type
devices which are unwieldy and cumbersome and complex in
design.
However, none of the prior art arrangements are designed to
efficiently constitute a device that is of a simple design and at
the same time a device that can be easily insertable in the hole of
the wall and provide a permanent and rigidly fixed backing
structure for a filler such as wood putty, plaster and the
like.
SUMMARY OF THE INVENTION
Hollow-core doors and walls are often damaged by the workmen during
construction of the structure, by the movers during the movement of
the furniture in or out of the structure and the like. Such damaged
doors and wall areas are often poorly repaired or not repaired at
all which action is detrimental to the owner of the structure.
The primary object of this invention, therefore, is to provide a
new and improved device for use in repairing holes in damaged doors
and walls.
A further object of this invention is to provide a new and improved
anchoring type device which can be readily inserted into the wall
hole, can be easily and quickly adjusted to the desired location
and finally can provide a permanent and rigidly secured cover plate
over the wall hole.
Accordingly, the device described herein is basically an item of
hardware for use in repairing a damaged wall portion of a double
walled structure such as a door or wall. The device is essentially
composed of a threaded shaft; a backing plate that is integrally
fixed to one end of the shaft, the backing plate in an operative
use position resting against the interior of a rear wall of the
double walled structure; a block member threadly mounted on the
shaft; a screened plate in an operative use position resting
against the interior of a front wall of the double walled
structure, the shaft being movably mounted to the desired adjusted
position within the length of an elongated slot of the screened
plate and a pair of rails integrally fixed to the ends of the
screened plate in a spaced parallel manner and movably mounted in
elongated grooves of the block member. The various adjustable
features of the shaft, screened plate and block member provide a
means of easy insertion through the damaged hole in the double
walled structure and also a means of securely fastening the device
in a selective position between the above-defined rear and front
walls. Thus, the device constitutes a permanent and rigidly fixed
backing panel for a filling material such as wood putty, plaster
and the like.
Other objects and many advantages of this invention will become
more apparent upon a reading of the following detailed description
and an examination of the drawings, wherein like reference numerals
designate like parts throughout.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the device for repairing a damaged
double walled structure according to the present invention;
FIG. 2 is a plan side view taken along the length of the
device;
FIG. 3 is a plan side view taken along the width of the device;
FIG. 4 is a plan top view of the device;
FIG. 5 is a view similar to FIG. 3 in which the device is being
initially angled into position within the double walled structure;
and
FIG. 6 is a view in which the device is permanently and rigidly
secured in an operative use location within the double walled
structure.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Having reference now to the details of construction, a device for
repairing a hole in a wall is designated by reference numeral 10.
The device 10 has a screw threaded shaft 12 and a flat backing
plate 14 integrally fixed to one end of the shaft 12.
A rectangular block member 16 has a central screw threaded opening
therethrough whereby the block member 16 is axially mounted on the
threaded shaft 12. The block member 16 has inwardly cut grooves 18
on the side walls of the rectangular block member for purposes
hereinafter described.
As disclosed by FIGS. 1 and 4, a rectangular screened facing plate
20 has an elongated slot 22 substantially extending the entire
length of the rectangular plate. The screened plate 20 is mounted
as shown in FIGS. 1 to 3 above the block members 16. The shaft 12
is adapted for insertion through the slot 22 and may be manipulated
during the installation operation therealong and after the
installation is completed, positioned at a permanent location
within the slot 22. A pair of rail members 24 extend in parallel
manner to the screened plate 20 and also parallel to each other.
The rail members 24 are situated as shown in FIG. 3 on both sides
of the shaft 12. The rail members 24 have short extensions at the
ends thereof bent upwardly to be integrally fixed to the width ends
of the screened plate 20. The rail members 24 are slidably mounted
within the grooves 18 of the block member 16.
In the use of the present invention, the device 10 is adapted to be
inserted in its compact or unexpanded state into a hole 26 in the
front wall section 28, as shown in FIG. 5. This hole needs only to
have a length and width very slightly larger than the length and
width, respectively, of the screened plate 20. The device 10 is
inserted sideways or endways through the hole 26. Once the device
10 has been inserted through the hole 26, the device may be turned
to the best location therein whereby the screened facing plate 20
may be turned to the best location to cover the maximum hole area
prior to the rotation of the screw shaft 12 which results in an
outward movement of the assembly that consists of the screened
plate 14 with its attaching rail members 24 and block member 16
carried by the rail-groove connections. In the expanded and
permanent position of the device 10 as seen in FIG. 6, the flat
backing plate 14 is screwed firmly against the internal side of a
rear wall section 30 and the screened facing plate 20 is screwed
firmly against the internal side of the front wall section 28 and
thus facing plate 20 substantially covers the hole 26. Any excess
length of the shaft 12 that extends outwardly beyond the screened
plate 20 may be cut off thereby presenting an outwardly depressed
flat surface to which wood putty, plaster and the like may be
readily applied.
Consequently, a finished wall having an installed device 10 therein
will appear as an attractive surface section that has a greater
tensile strength than the original one.
In order to more fully understand the present invention, the
specific directions generally utilized for installing the device in
a two walled structure are recited as follows:
1. Determine the size of the damaged wall area and select a device
of a particular size constructed in accordance with the teachings
of the present invention to accomodate the size of the damaged
area.
2. Rotate the threaded shaft counterclockwise until the backing
plate is flush against the sliding block.
3. Slide the block to either end of the screened plate.
4. Proceed to grip the outer end of the threaded shaft and guide
the device into the damaged area.
5. When the device is substantially within the two walled
structure, center the block and maneuver the screened plate whereby
it covers all or most of the damaged area.
6. After the device is centered, hold it firmly in place and rotate
the shaft clockwise until the backing plate is firmly against the
interior back wall of the two walled structure.
7. It is important that the shaft not be tightened beyond a maximum
value.
8. Excess length of the shaft is to be trimmed resulting thereby
with the end of the shaft being substantially flushed with the
screened plate.
9. wood putty, plaster and the like is to be applied over the
screened plate until a surface is obtained that is flush with the
original wall surface.
10. Repaired wall surface is to be properly sanded and finished and
the finished repaired area performed by a competent workman will
defy detection of any repair by the most critical inspection.
The device according to present invention is suitable of course for
repairing holes in any two-walled structural arrangements such as a
ceiling or floor, panel member and the like, the process of
installation being substantially the same as above described.
While a preferred embodiment of the invention has been shown and
described, a skilled artisan may make variations which do not
depart from the spirit of the invention or the scope of the
appended claims.
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