U.S. patent application number 10/466670 was filed with the patent office on 2004-03-18 for reinforcement device and use of it in walls.
Invention is credited to Gustavsson, Hans.
Application Number | 20040050002 10/466670 |
Document ID | / |
Family ID | 20283132 |
Filed Date | 2004-03-18 |
United States Patent
Application |
20040050002 |
Kind Code |
A1 |
Gustavsson, Hans |
March 18, 2004 |
Reinforcement device and use of it in walls
Abstract
The invention relates to a reinforcement device for fastening,
in this context, tremendous loads to particularly weaker walls of
the type wallboard coated stud frame, and to contribute to the
ability of walls to resist horizontal forces. The reinforcement
device comprises portions, which connect and reinforce the parts of
the wall construction. Thus, exceeding a materials tensile strength
can be avoided, and the forces are distributed over a larger area,
wherein the resistibility thereof can be summarised to a larger
resistance. In a certain embodiment the reinforcement device can be
used for fastening in solid constructions, such as light concrete
and hollow brick constructions.
Inventors: |
Gustavsson, Hans; (Lund,
SE) |
Correspondence
Address: |
Rolf Fasth
Fasth Law Offices
629 E Boca Raton Road
Phoenix
AZ
85022
US
|
Family ID: |
20283132 |
Appl. No.: |
10/466670 |
Filed: |
July 21, 2003 |
PCT Filed: |
February 27, 2002 |
PCT NO: |
PCT/SE02/00348 |
Current U.S.
Class: |
52/364 |
Current CPC
Class: |
E04B 2/7457 20130101;
F16B 13/141 20130101; E04B 2002/7485 20130101; E04B 2/723
20130101 |
Class at
Publication: |
052/364 |
International
Class: |
E04C 003/16; E04F
013/06 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 27, 2001 |
SE |
0100647-7 |
Claims
1. A reinforcement device for walls of the type wallboard coated
stud frame, which reinforcement device is designed to support a
load and contribute to the capacity of walls to resist outer
pressure, characterised in that the device comprises a body (12) to
provide a connecting effect between opposite arranged wallboards
(10) of a wall, and that the device is providing a spreading effect
of forces acting locally on said wall.
2. A reinforcement device according to claim 1, wherein said
cylinder body (12) is solid and fastened in a rear portion thereof
by the means of a glued joint (14) and a pin (22), and is guided
and supported in a front portion thereof by a surface (15). The
body (12) is provided with an aperture for fastening means
(16).
3. A reinforcement device according to claim 1, wherein said
cylinder body (12) is solid and fastened in a rear portion thereof
by the means of a glued joint (14) and a pin (22), and is guided
and supported in a front portion thereof by a surface (15), in a
glued joint (14). The body (12) is provided with an aperture for
fastening means (16).
4. A reinforcement device according to claim 1, wherein said
cylinder body (35) is solid and designed with a conical end
portion, and is fastened in a rear portion thereof by the means of
a glued joint (14) and a pin (22), and is guided and supported in a
front portion thereof by a bordered surface (15), in a glued joint
(14). The body (12) is provided with an aperture for fastening
means (16).
5. A reinforcement device according to claim 1, wherein said
cylinder body (18) is reel-shaped and solid or hollow. It is hollow
if it is to be surrounded by a wire cloth (27) and cast-surrounded
with joint compound (26). The cylinder body is fastened in a rear
portion thereof by the means of a glued joint (14) and a pin (22),
and is guided and supported in a front portion thereof by a
bordered surface (15), in a glued joint (25). The body (12) is
provided with an aperture (16) for fastening means and, if the
cylinder body is hollow, a reduction plug (21).
6. A reinforcement device according to claim 1, wherein said
cylinder body (18) is reel-shaped and hollow. It is hollow to be
surrounded by a wire cloth (27) and cast-surrounded with joint
compound (26). The cylinder body is fastened in a rear portion
thereof by the means of a glued joint (14) and a pin (22), and is
guided and supported in a front portion thereof by a bordered
surface (15), in a glued joint (25). The body (12) is provided with
an aperture (16) for fastening means and, if the cylinder body is
hollow, a reduction plug (21).
7. A reinforcement device according to claim 1, comprising the
device according to one embodiment, wherein the rear portion of the
device is elongated (31), and comprises a movable part (34) on the
cylinder body. Further, the cylinder body (32) and the portion
filling the lead through (30) in the wallboard are included. The
cylinder body (32), having its front portion (30) and its rear
portion (31), provides a fixed unit. The unit is mounted in a rear
portion thereof by the means of a glued joint (14) and a pin (22),
and is guided and supported in a front portion thereof by a surface
(15). Further, a glued joint (14) is included, which glues the
movable part to the rear portion of the front wallboard. Further, a
reduction plug (21) is included, having an aperture for fastening
means (16) if the cylinder body is hollow, and a wire cloth (27) is
included, wherein the device can be filled with joint compound.
Further, the movable part is turned 180 degrees in relation to the
fixed unit. Further, pull-strings (33) are included, which are
attached to the movable part (34), and the use of these
pull-strings to move the movable part and to rotate it along the
cylinder body is included. Further, a lock for threading onto these
pull-strings is included.
8. A reinforcement device according to claim 1, comprising the
device without the cylindrical intermediate portion. The rear plate
(38) is rectangular, or essentially rectangular. The front plate
(30), which can be provided with glue (25), is thread onto the
pull-strings (33), which are fastened in the rear plate (38). The
device can be turned in an optional direction in a full circle, or
380 degrees. The plate (28) is provided with glue (14). The front
plate (32) is comprised by an elliptic front side and a circular
back side.
9. Use of a reinforcement device according to claim 1 in connection
with reinforcement of stud frame walls.
10. Use of a reinforcement device according to claim 1 in
connection with reinforcement of more rigid walls, for example
hollow brick walls or light concrete walls or the similar.
11. A reinforcement device according to claim 1, comprising the
device according to some embodiments, particularly as a straight
cylinder body (12, 35), or having some degree of reel-shape (18),
also applied to solid materials, such as light concrete or hollow
bricks. The devices are then fastened to the surrounding material
by glue in the entire length of the device, or in a desired and
possible portion thereof.
Description
TECHNICAL FIELD OF THE INVENTION
[0001] The present invention relates to a device for fastening
details to walls and/or reinforcement of walls comprising
wallboards, for example of gypsum, mounted to a framework, wherein
the supporting parts may be studs of, for example, wood or metal.
The device is to be positioned in the areas of the wallboard absent
of framework parts.
[0002] When the device is provided with a cavity filling effect the
indentation of the wallboards is reduced under the influence of
stress.
[0003] For example, such an ability is required for backings to be
tiled or otherwise coated with rigid materials which may crack and
break, or when a rigid construction is required or desired.
STATE OF THE ART
[0004] The traditional method to perform fastening to wallboards
of, for example, gypsum, may be to introduce plugs of plastic or
rubber into predrilled apertures in the wallboard. These plugs are
wedged when expanding and are forced against the edges of the
wallboard in the aperture, for example when a screw having a larger
diameter than the aperture usually provided in the plug is
introduced therein. So called hollow wall screw anchors are also
present, which are Introduced into a small aperture and expands on
the rear side of the wallboard.
[0005] Screws having an elongated screw nut profile are also
present. The screw nut profile may be positioned parallel to the
screw and, when brought through the wallboard, extended
perpendicular to the screw to receive support from the rear side of
the wallboard. In one embodiment the invention can be limited to a
similar range of application, which is indicated essentially with
reference to FIGS. 20, 21, 22, 23.
[0006] One major drawback with the devices according to prior art
is that they do not tolerate large forces before the material of
the wallboard is breaking, because of the use of only one part of
the wall.
[0007] When more rigid walls are required than normally the studs
are arranged closer. Usually this imply a distance between the
studs of 40 cm. To reinforce present walls removal of one wallboard
is required for opening the wall to enable the introduction of more
studs, which then are coated with a wallboard of normal quality.
Alternatively more rigid special wallboards present on the market
are selected. Then, the original distance between the studs can be
used, which usually is 60 cm. Also in this case one wallboard is
removed. Yet another manner is to provide the wall with an
additional standard wallboard. This imply that, for example, the
length of a bathroom wall usually is reduced by two times the
thickness of a wallboard, which in a normal case results in two
times 13 mm, i.e. 26 mm. This might cause a problem with the
dimensions of the interior equipment, such as the dimensions of a
bathtub to be reinstalled and consequently is not fitting in its
earlier position. Yet a more extensive drawback is in this case
that present water conduit connections may be found inside the
wall, wherein a water leakage is undetectable, and if a leakage
arise the water is forced into the wall by the impermeable layer on
the surface of, for example, sanitary walls. All cases also require
a large amount of work and materials and are consequently
expensive. Usually, the costs for electricity and conduit
installations increase if the number of studs and wallboard layers
are altered in present walls.
SUMMARY OF THE INVENTION
[0008] One object of the present invention is to enable larger
loads on fastening means than possible with present devices, and to
enable reinforcement of the wallboards of a wall. The reinforcement
device may be used for fastening exclusively or reinforcement
exclusively or in combination, for example, when particularly large
stress is to be managed.
[0009] The present invention uses the fact that, for example, a
wall of gypsum wallboard mounted on a framework of studs comprises
one wallboard on each side of a stud. The reinforcement device is
in its most simple embodiment a cylinder adapted to reach through
one of the wallboards from its outer side and through the space
between the wallboards, which space is a result of the stud, to the
inner side of the opposite wallboard. In this position the cylinder
may be fastened by the means of a glued joint. Thus, a fastening
means is obtained having a lever substantially increasing its
ability to bear loads mounted to the free end thereof. If the
direction of the forces is increased towards a vertical direction
the importance of the lever-forming design of the cylinder is
increasing, especially when mounted in a substantially vertical
construction. The ability of the cylinder to handle forces is
limited by the strength of the glued joint at the opposite
wallboard and the size of the contact surface of the lead through
of the front wallboard. When loaded until collapse the glued joint
is breaking and/or the material at the inlet of the wallboard is
crushed. The distance between the wallboards can also be of
importance.
[0010] The lever is increased with the distance, which results in a
more extensive resistance. The cylinder must be rigid to avoid
bending thereof.
[0011] Further, the cylinder may be hollow in its length and
provided with holes through the portion of the surface thereof,
positioned in the space of the wall.
[0012] For example, an elastic fabric or film may further be
positioned around the cylinder, which functions as a mould for
expanding substances injected into the cylinder upon requirement.
These force their way out through the holes and fill the mould
surrounding the cylinder, wherein a rigid body casting the cylinder
and sticking to and filling between the wallboards is obtained.
This results in a reinforcement device increasing the rigidity of
the wall and to which, for example, screws or hooks can be mounted
and then loaded with extensive loads.
[0013] By increasing the area glued to the opposite wallboard and
the radius of the reinforcement device at the lead through of the
wallboard, the performance is increased accordingly.
[0014] According to one embodiment the device may be regarded as a
cylinder with a first and a last portion having a somewhat larger
diameter than the intermediate portion. This design is used to
enable for the wire cloth to be winded up on the intermediate
portion, wherein the wire cloth can be brought through the aperture
arranged in the outer wallboard in the mounting procedure. The
performance is increased with increasing end diameters of the
cylinder. The glued end of the cylinder, may in every embodiment be
bordered for improved adherence.
[0015] If the wall is filled with a medium, for example present
types of sufficiently stabile insulation, the cylinder does not
have to be surrounded by the wire cloth. Instead a space of desired
dimensions can be formed in the current medium, which space is
adapted for the current design of the reinforcement device.
[0016] According to one embodiment an elongated plate is mounted in
the end of the cylinder, which is to be glued to the opposite
wallboard. By this manner the largest possible surface can be
brought through the substantially circular aperture.
[0017] According to another embodiment a further elongated plate is
enclosed, which is unattached and thread onto the cylinder shaft.
This plate can then be pulled towards the back side of the first
wallboard and glued thereto. This will increase the strength of the
wallboard and, thus, the loading capacity.
[0018] When an elongated plate is used the plates can either be
positioned opposite each other, or with 180 degrees of
displacement, and then be turned to an optional position in a full
circle of 360 degrees as a combined unit, dependent on the
direction and size of the current forces and how these, in each
case, are handled in the best manner according to calculation.
[0019] In several of the different embodiments the reinforcement
device can be provided with the wire cloth, and thereby with
reinforcing fillings between the wallboards.
[0020] According to one embodiment, where improvement of the wall
to carry horizontal pressure is desired but filling of the space
between the wallboards with more than the cylinder not is desired,
the portion of the cylinder not glued to the rear wallboard and the
aperture through the wallboard may be formed somewhat conical. The
gap formed thereby may then be filled with a hardening joint
sealing compound. This construction transfers horizontal forces
applied to the front wallboard also to the rear wallboard. The
extracting resistance of the reinforcement device in a horizontal
direction is also improved.
[0021] All cylinder tubes of fastening devices adapted for
injection may be provided with an adapter unit between the internal
cylinder area and a hole adapted for a screw after injection of,
for example, an expanding substance.
[0022] The device may in some embodiments, especially as a straight
cylinder (12) and (15) or having a reel shape (18), also be applied
in solid materials, such as light concrete or hollow bricks.
[0023] The devices are then glued to the surrounding material in
the entire length of the device, or a desired and possible portion
thereof.
[0024] According to one embodiment one construction part may be
excluded, for example a cylinder, which enable fastening to the
rear wallboard. Instead a more traditional reinforcement of the
front wallboard may be used.
[0025] To facilitate the mounting of the device, particularly at
the hardening of glues or joint compounds if used, a fixing device
associated to the device may be used. This comprises of a
substantially circular cone having a peg, which can be inserted in
the aperture 16.
[0026] The cone is provided with a larger diameter than the device
so that it is supported by surrounding surfaces, to which it
temporarily can be fastened by the means of glue and/or a pin.
[0027] It may also be provided with filling spacers to compensate
for differences in diameter. Such a spacer may also be mounted
permanently.
[0028] If there is space filling means, for example mineral wool
insulation in the wall, and removal of this is desired a space
clearing tool developed for the device may be used. The tool
comprises a bar having a pivoted front portion provided with a
cutter. This tool is inserted through an aperture in the wallboard
and is heavily rotated, for example by the means of a drilling
machine. The pivoted portion is extended and clears a space having
a radius corresponding to the length of the pivoted portion and a
space length corresponding to how far the tool is inserted.
BRIEF DESCRIPTION OF THE DRAWINGS
[0029] The drawings are labelled: Fig . . . , and a number, and
shall be read in the order stated. The numerical order may be
reversed.
[0030] The invention will now be described in more detail with
reference to the accompanying drawings, in which
[0031] FIG. 1 is a schematic side view in longitudinal section of
the device according to one embodiment as a straight cylinder
mounted in a wallboard coated timber frame wall.
[0032] FIG. 1F (F refer to a front view=the outside of a wall)
illustrates the device from the front.
[0033] FIG. 2 is a longitudinal section view from above of the
device in FIG. 1.
[0034] FIG. 3 is a schematic side view in longitudinal section of
the device according to one embodiment as a straight cylinder and
provided with a joint lead through of the wallboard.
[0035] FIG. 3F illustrates the device in FIG. 3 from the front.
[0036] FIG. 4 is illustrates the device in FIG. 3 from above.
[0037] FIG. 5 is a schematic side view in longitudinal section of
the device according to one embodiment as a straight cylinder,
having a conical end portion, mounted in a wallboard coated stud
frame wall.
[0038] FIG. 5F illustrates the device in FIG. 5 from the front.
[0039] FIG. 6 is a longitudinal section view from above of the
device in FIG. 5.
[0040] FIG. 7 is a schematic side view in longitudinal section of
the device according to one embodiment similar to a reel.
[0041] FIG. 7F illustrates the device in FIG. 7 from the front.
[0042] FIG. 8 illustrates the device in FIG. 7 from above.
[0043] FIG. 10 is a schematic side view in longitudinal section of
the device according to an embodiment similar to FIG. 7, but joint
compound has been applied, for example an expanding substance.
[0044] FIG. 9F illustrates the device in FIG. 9 from the front.
[0045] FIG. 9 illustrates the device in FIG. 10 from above.
[0046] FIG. 15 and FIG. 16 is a schematic side view in longitudinal
section of the device according to one embodiment, in which the
rear portion of the device is elongated and as large as possible
for insertion through the aperture of the front wallboard. The
movable part, which is similar to the rear portion and can be
pulled along the cylinder to the rear side of the front wallboard,
is also illustrated. Further, the cylinder body and the portion
filling the lead through in the wallboard is illustrated.
[0047] FIG. 15F illustrates the device in FIG. 15 and FIG. 16 from
the front.
[0048] FIGS. 11 and 12 illustrates the device in FIG. 15 and FIG.
16 from above.
[0049] FIG. 18 illustrates the same device as in FIG. 15 and FIG.
16 provided with 27 and injected with 26.
[0050] FIG. 18F illustrates the device in FIG. 15 and FIG. 16 from
the front.
[0051] FIG. 14 illustrates the device in FIG. 15 and FIG. 16 from
above.
[0052] FIG. 13 is a schematic view from above illustrating the
conversion of FIG. 15 to FIG. 17.
[0053] FIG. 17F illustrates FIG. 17 from the front.
[0054] FIG. 19 illustrates the device in FIG. 17 from the side and
provided with 27, 26.
[0055] FIG. 19F illustrates FIG. 19 from the front.
[0056] FIG. 20 is a schematic side view of the device illustrated
without the cylinder and having one plate pulled towards 30. This
design of the device reinforces and fastens in one wallboard only,
namely the one closest to the fastening means.
[0057] FIG. 21 illustrates the device in FIG. 20 from the side in a
contracted position.
[0058] FIG. 22 illustrates the device in FIG. 20 from the
front.
[0059] FIG. 23 illustrates the device in FIG. 21 from above.
DESCRIPTION
[0060] With reference to FIG. 1 the reinforcement device is
illustrated as a straight and possibly solid cylinder body 12
arranged between wallboards 10. This design is adapted to be
utilized for the fastening of fastening means, such as screws, to
fasten loads acting in a substantially perpendicular direction in
relation to the longitudinal section. The cylinder body 12
comprises an aperture 16 for fastening means, which aperture 16 is
arranged along the centre of the cylinder body 12. The cylinder
body further comprises a bordered end 13, a fixing pin 22 to
protrude into a rear wallboard 10, which fixing pin 22 is
projecting from one end of the cylinder body 12, and a glued joint
14. An area of a wallboard lead through 15, or envelope surface of
the cylinder body 12, is illustrated in FIG. 1. FIG. 1F illustrates
the device from the front, i.e. from the outside of the
construction, which normally is a wall. FIG. 2 illustrates the
device from above, wherein a stud 11 also is indicated.
[0061] An aperture is arranged in the front wallboard 10, wherein
the cylinder body 12 provided with the glued joint 14 can be
introduced and fastened to the rear wallboard 10.
[0062] With reference to FIG. 3 the reinforcement device is
illustrated as a cylinder body 12 provided with a glued joint 14 at
one portion of the cylinder body 12 to be positioned at the front
wallboard 10. This design is adapted for utilization in connection
with the fastening of fastening means, such as screws, to fasten
loads acting in a substantially perpendicular direction in relation
to the longitudinal section. However, the glued joint 14
contributes to a certain extent to the distribution of horizontal
forces acting upon the wallboard, and to increase the extraction
resistance of the reinforcement device in a horizontal plane. For
example, the cylinder body 12 comprises a bordered cylinder surface
24 at the wallboard lead through area 15. FIG. 3F illustrates the
device from the front, i.e. from the outside of the construction,
which usually is a wall. FIG. 4 illustrates the device from above.
An aperture is arranged in the front wallboard, wherein the
cylinder body 12 provided with the glued joint 14 can be inserted
and fastened to the rear wallboard and the lead through.
[0063] With reference to FIG. 5 the reinforcement device is
illustrated as a cylinder body 35 having a conical end portion.
When a tapered lead through 36 and the glued joint 14 is arranged,
this embodiment is adapted to be used for the fastening of
fastening means, such as screws, to fasten loads acting in a
substantially perpendicular direction in relation to the
longitudinal section. However, the glued joint contributes to the
distribution of horizontal forces acting upon the wallboard, and
increases the extraction resistance of the reinforcement device in
a horizontal plane. FIG. 5F illustrates the device from the front,
i.e. from the outside of the construction, which usually is a wall.
FIG. 6 illustrates the device from above.
[0064] The mounting is performed as in FIG. 3, with the addition of
the tapered aperture 36 and that the cylinder body 12 is changed to
cylinder body 35.
[0065] With reference to FIG. 7 the reinforcement device is
illustrated as a reel-shaped hollow cylinder body 18. The
reel-shape is used when a thinner intermediate portion is desired.
When the rear bordered portion 20 of the reel-shaped cylinder and
the wallboard lead through area 15 is formed with a larger surface,
this embodiment for the fastening of fastening means, such as
screws, to fasten loads acting in a substantially perpendicular
direction in relation to the longitudinal section, will carry
larger loads. A glued joint 25 between a front portion 23 of the
reel-shaped cylinder 18 and the front wallboard 10 contributes to
the distribution of horizontal forces acting upon the wallboard and
the extraction resistance of the reinforcement device in a
horizontal plane will increase by using a larger bordered rear
portion 20. When a reel-shaped hollow cylinder body 18 is used,
this may be provided with a reduction plug 21 having an aperture
for fastening means. For example, the cylinder body 18 comprise
holes 19. FIG. 7F illustrates the device from the front, i.e. from
the outside of the construction, which construction usually is a
wall. FIG. 8 illustrates the device from above.
[0066] The mounting is performed as in FIG. 3, but the straight
cylinder body 12 is changed to a reel-shaped cylinder body 18 and
the glued joint 14 is changed to the glued joint 25.
[0067] With reference to FIG. 10 the reinforcement device is
illustrated as a reel-shaped cylinder body 18. The reel-shape is
used when a thinner intermediate portion is desired. An elastic
wire cloth 27, or another suitable medium, can be applied to this
intermediate portion when an expanding joint compound 26 is
intended to be used. After the wire cloth 27, which can be compared
to a portion of a very elastic stocking, is thread onto the thinner
intermediate portion of the cylinder body, the cloth is glued at
the, points 29 with, for example, a fast hardening glue of a
conventional hot-melt type of glue. This is performed to enable
filling of the mould with joint compound, such as polyurethane
foam, and preventing it from flowing out thereof. When the rear
bordered portion 20 of the reel-shaped cylinder and the wallboard
lead through area 15 is formed with a larger surface, this
embodiment for the fastening of fastening means, such as screws, to
fasten loads acting in a substantially perpendicular direction in
relation to the longitudinal section, will carry larger loads. A
glued joint 25 and the joint compound 26 contributes to the
distribution of horizontal forces acting upon the wallboard and the
extraction resistance of the reinforcement device in a horizontal
plane will increase by using a larger 20 and the joint compound 26.
When 18 is used, this may be provided with a reduction plug 21.
FIG. 9F illustrates the device from the front, i.e. from the
outside of the construction, which usually is a wall. FIG. 9
illustrates the device from above when applying the joint compound
26 by the means of a nozzle 28. Mounting procedure: An aperture
adapted for the cylinder body 18 is arranged in the front
wallboard. The diameter of the aperture shall correspond to the
front portion 23 and the rear portion 20 of the reel-shaped
cylinder. Glue or joint compound for the joints 14 and 25 is
applied. A wire cloth 27 is thread onto the intermediate portion of
the cylinder. The cylinder body is brought into the aperture of the
front wallboard and is glued to the rear wallboard. The cylinder
and the mould is filled with, for example, polyurethane foam
26.
[0068] With reference to FIG. 15 and FIG. 16 the reinforcement
device is illustrated in a side view of the device according to one
embodiment, in which the rear portion of the device is elongated
and as large as possible to be brought through the insertion
aperture in the front wallboard 10. Further, the movable part is
illustrated, which is similar to the rear portion, and can be
pulled along the cylinder to the rear side of the front wallboard.
Further, the cylinder body and the portion filling the wallboard
lead through is illustrated. The cylinder body 32, having its front
portion 30 and its rear portion 31, forms a rigidly assembled unit.
In FIG. 15 the front portion 30 is connected with the front
wallboard 10 by the means of the glued joint 25 and the rear
portion 31 is connected with the rear wallboard 10 by the means of
the glued joint 14. The tapered sides of the front portion 30
provides a supporting part, particularly when a movable part 34 is
pulled against the rear side of the front wallboard. The remaining
sides of the front portion 30 are not tapered. This is due to that
these surfaces are expected to substantially distribute forces
perpendicular to 15. Thus, horizontal forces acting to move the
fastening device are avoided. The elliptic shape of a rear cylinder
portion 31 and the movable part 34 contributes to give maximum
surface to those portions which are to be brought through the
aperture in the front wallboard. In turn this results in maximum
reinforcement and fastening capacities. The size of 30 is also
important for these capacities. Further, pull-strings 33 are
arranged on each side of the cylinder, wherein the movable part 34
rotates when the pull-strings are winded around the cylinder and 34
is pulled along the cylinder to its front position against 30. FIG.
16 illustrates the movable part 34 connected with the front
wallboard 10 by the means of the glued joint 14.
[0069] FIG. 15F illustrates the device in FIG. 15 and FIG. 16 from
the front.
[0070] FIG. 11 and FIG. 12 illustrates the device in FIG. 15 and
FIG. 16 from above.
[0071] Mounting procedure: The combined unit 30,32,31, having the
movable part 34 arranged adjacent to the rear portion 31, is
inserted into the aperture adapted to the front portion 30. The
aperture adapted to 30 may, for example, be arranged with a
conventional hole cutter and tapered by the means of a file to fit
the elliptic shape of 30. The elongated plates 31 and 34 are held
in a parallel position and are inserted into the aperture with the
portion extending the most from the central axis of the cylinder
first. The rear portion 31 is already provided with glue and is
glued to the rear gypsum wallboard, and in occurring cases to the
glued joint 25 on the portion 30, and on the part 34 glued to the
rear side of the front wallboard. This latter glue is also gluing
the front portion 30 to the movable part 34. The combined unit
described above is pressed against the rear gypsum wallboard and is
fastened thereto by the means of the fixing pin 22. As a result the
movable part 34 can be pulled into position by the means of the
pull-strings 33, see FIG. 16. Locking means can now be threaded
onto the pull-strings, which may be permanent or in position only
until the joints are hardened. If a hollow cylinder body is used
the holes thereof can, if required, be reduced by the means of an
adapter 21. If filling with joint compound 26 is intended as is
illustrated in FIG. 18, this is injected before sealing with 21
takes place.
[0072] FIG. 18 illustrates the same device as in FIG. 15 and FIG.
16 but provided with the elastic wire cloth 27 and injected with
joint compound.
[0073] This increase the capacity of the reinforcement device to
give, for example, a wall increased ability to bear larger
horizontal and vertical forces in the area affected by forces,
which in turn acts upon the fastening means.
[0074] FIG. 18F illustrates the device in FIG. 18 from the
front.
[0075] FIG. 14 illustrates the device from above.
[0076] Mounting procedure: The same as described with reference to
FIGS. 15 and 16 with the addition that the wire cloth 27 is
threaded before the parts 34 and 31 are brought together. Fastening
of the wire cloth to the mentioned parts is also required, suitably
by a conventional fast hardening hot-melt, to be stretched when 34
is pulled into position against the rear side of the front
wallboard. See FIGS. 18, 18F and 14.
[0077] FIG. 13 illustrates how the reinforcement device has been
mounted according to FIG. 17, wherein the unattached part 34 has
been brought to rotate 180 degrees. The instructions of FIGS. 15
and 16 is followed, but with the difference that the pull-strings
33 are winded half way around the cylinder body. When 34 is pulled
into position against the rear side of the front wallboard, 34
rotates a half turn.
[0078] FIG. 19 illustrates a case when the injection of joint
compound 26 Is continued. This must be prepared by the mounting of
wire cloth 27 before 34 is brought together with 31, before the
insertion through the aperture arranged in the front wallboard.
Since 34 will rotate a half turn 31 and 34 must be kept in this
final position when the wire cloth is fastened, suitably with a
fast hardening hot-melt. Suitable fastening points are:
[0079] See FIGS. 19 and 19F.
[0080] 1. fold the wire cloth and fasten it to 34, close to the
cylinder body but not against it.
[0081] 2. fold the wire cloth and fasten it to 31, one fastening
point, at the rounded end, close to the cylinder body.
[0082] 3. pull the wire cloth over the corners of 31 and fasten it
thereto.
[0083] The wire cloth is now fastened in four points and is resting
upon the cylinder body when the reinforcement device is mounted to
the wall, and can receive polyurethane foam for example.
[0084] With reference to FIG. 20 the reinforcement device is
illustrated without the cylindrical intermediate portion. The rear
wallboard is rectangular, or substantially rectangular. An aperture
having a suitable size, adapted for fastening fastening means 37
and the plate 38, is arranged in the front wallboard. The device
can be turned in an optional direction in a full circle of 380
degrees. The edges of the aperture is tapered to fit to 30, or
alternatively an unattached front portion. The plate 38 is provided
with glue and connected with 30, which can be provided with glue
25, through the pull-strings 33. The plate is brought into the
aperture, which among other things is possible by the length and
flexibility of the pull-strings. The unattached portion 30 is
inserted into the aperture and is filling it up. The plate 38 is
pulled together with 30 and the rear side of the front wallboard,
and can be fastened thereto by the means of locking means threaded
onto the pull-strings. Except FIG. 20, illustrating the
reinforcement device in this form from the side when positioning
30, having its elliptic front with the larger diameter,
horizontally, FIG. 21 illustrates the device from the side when it
is pulled together and otherwise positioned as illustrated in FIG.
20. FIG. 22 illustrates the device positioned as described in FIG.
20 from the front. FIG. 23 illustrates the device positioned as in
FIG. 20 from above.
[0085] If space filling means, such as mineral wool insulation, is
present in the wall and the removal of this is desired a space
clearing tool developed for the device may be used. The tool
comprises a bar having a pivoted front portion provided with a
cutter. This tool is inserted through an aperture in the wallboard
and is heavily rotated, for example by the means of a drilling
machine. The pivoted portion is extended and clears a space having
a radius corresponding to the length of the pivoted portion and a
space length corresponding to how far the tool is inserted.
[0086] To facilitate the mounting of the device, particularly at
the hardening of glues and joint compounds, a fixing device
associated to the device may be used. This comprise of a
substantially circular cone having a peg, which can be inserted in
the aperture 16.
[0087] The cone is provided with a larger diameter than the device
so that it is supported by surrounding surfaces to which it
temporarily can be fastened by the means of glue and/or a pin. It
may also be provided with filling spacers to compensate for
differences in diameter. Such a spacer may also be mounted
permanently.
[0088] The device can in some of the embodiments, particularly as a
straight cylinder 12 and 35 or having a somewhat reel-shape 18,
also be applied to solid materials, such as light concrete or
hollow bricks. The devices are then glued to the surrounding
material in the entire length of the device, or a desired and
possible portion thereof.
* * * * *