U.S. patent number 3,852,935 [Application Number 05/291,332] was granted by the patent office on 1974-12-10 for magnetic wall stud.
Invention is credited to Harold R. Jones.
United States Patent |
3,852,935 |
Jones |
December 10, 1974 |
MAGNETIC WALL STUD
Abstract
A stud for magnetically supporting walls, each stud having a
pair of oppositely disposed support surfaces. Each surface has at
least one longitudinal channel therein for holding a magnetic
material. Elongated metal strips are secured to the wallboards,
which in turn are disposed on either side of the channeled surfaces
and held there against by the magnetic force being exerted on the
strips.
Inventors: |
Jones; Harold R. (Placentia,
CA) |
Family
ID: |
23119876 |
Appl.
No.: |
05/291,332 |
Filed: |
September 22, 1972 |
Current U.S.
Class: |
52/481.1;
52/DIG.4; 52/481.2; 52/238.1 |
Current CPC
Class: |
E04B
2/78 (20130101); E04F 13/0883 (20130101); E04B
2/7457 (20130101); E04B 2002/7468 (20130101); Y10S
52/04 (20130101) |
Current International
Class: |
E04B
2/74 (20060101); E04B 2/76 (20060101); E04B
2/78 (20060101); E04b 002/30 () |
Field of
Search: |
;52/DIG.4,720,64,281,289,476,481,582,583,483 ;248/26A |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Sutherland; Henry C.
Assistant Examiner: Friedman; Carl D.
Attorney, Agent or Firm: Lyon & Lyon
Claims
I claim:
1. A stud for supporting lengths of wallboard of the type which are
magnetically attractive, said stud being composed of a magnetically
conductive material and having oppositely disposed elongated
support surfaces joined together by a web, each of said support
surfaces having a longitudinal channel therein, a quantity of
permanent magnetic material positioned in each of said channels,
said magnetic material being recessed therein from said support
surfaces thereby defining air gaps between the magnetic material
and said support surfaces, said magnetic material being coupled in
flux conducting relationship to the supporting surfaces of said
stud, whereby said magnetically attractive wallboard may be firmly
held against said supporting surfaces of said stud.
2. The combination of claim 1 wherein each of the magnetic poles of
the magnetic material positioned within each channel is in contact
with one of the side walls of said channel so that, in operation,
said wallboard is held to said stud by the magnetic force of the
permanent magnetic material acting through said support surfaces on
said magnetically attractive wallboard.
3. A stud for supporting lengths of wallboard of the type which are
magnetically attractive, said stud being composed of a magnetically
conductive material and having oppositely disposed elongated
support surfaces joined together by a web, each of said supporting
surfaces having a longitudinal channel therein, a quantity of
permanent magnet material positioned in each of said channels, said
magnetic material being recessed therein from said support surfaces
thereby defining air gaps between the magnetic material and said
support surface and each magnetic pole of said permanent magnetic
material being in contact with one of the side walls of the channel
in which said material is positioned, whereby the magnetic force
acts through said support surfaces and said magnetically attractive
wallboard is firmly held against said supporting surfaces of said
stud.
4. The combination of claim 3 wherein said channels are disposed
intermediate of said support surfaces.
5. The combination of claim 3 wherein each of said support surfaces
has a pair of longitudinal channels therein, each of said channels
being equidistant from the central longitudinal axis of said
stud.
6. The combination of claim 3 wherein said permanent magnetic
material comprise strips of rubber bonded permanent magnetic
material.
7. The combination of claim 6 wherein said bonded material is
barium ferrite composite.
8. The combination of claim 7 wherein said channels are disposed
intermediate of said support surfaces.
9. The combination of claim 7 wherein each of said support surfaces
has a pair of longitudinal channels therein, each of said channels
being equidistant from the central longitudinal axis of said stud.
Description
BACKGROUND OF THE INVENTION
Modern building techniques frequently employ portable walls for use
in office buildings and the like, thereby creating a demand for
more efficient means for supporting such walls. Generally metal
studs are extended between the floor and ceiling area where the
wall is to be erected and braced at their upper and lower
extremities. The wallboard is then permanently affixed to the studs
by a suitable fastening means. Finally the wallboard is finished
with the appropriate covering and a base is provided about the
lower edges thereof. While this procedure produces a wall which can
be removed without permanently damaging the building structure, the
wall itself is not truly movable as it is destroyed by disassembly
through the use of these permanent securing means.
Attempts to solve this problem have been made using permanent
magnets. Such proposals calls for securing permanent magnets to the
wallboard which in turn hold the wallboard to the studs through
magnetic force. However, such attempts have proved unsatisfactory
due to the high cost of magnet installation on the job, the
propensity for the magnets which protrude from the boards to be
inadvertently knocked therefrom during storage and installation and
the inability to compactly stack the boards with the magnets
attached thereto. In addition, such proposals have not adequately
utilized the potential of permanent magnets and therefore must
offset this loss through the use of larger magnets to obtain a
strong holding force.
SUMMARY OF THE INVENTION
Briefly the invention comprises a metal stud which on oppositely
disposed sides thereof holds a magnetic strip within one or more
longitudinal open channels. Corresponding metal strips are secured
to the wallboards which in turn are supported on each side of the
stud by the magnetic force exerted on the strips. In this manner, a
plurality of such studs support a common wall between two
rooms.
It is the principal object of this invention to provide a stud for
supporting a wall which allows for removal of the wall without
permanent damage thereto.
It is another object of this invention to provide a stud for
magnetically supporting a wall thereto which is superior to such
studs heretofore available.
It is a further object of this invention to provide a stud for
magnetically supporting a wall thereto which is of simple
construction and economical to manufacture.
It is a still further object of this invention to provide a stud
for magnetically supporting a wall thereto which reduces labor
costs through through the elimination of field set up time.
These and other objects and advantages of the present invention
will become apparent upon the following detailed description taken
in conjunction with the accompanying drawings.
IN THE DRAWINGS
FIG. 1 is a frontal view of a portion of a wall supported by the
magnetic studs of the present invention.
FIG. 2 is a sectional side view of the wall and one of the
studs.
FIG. 3 is a sectional plan view showing the wall and two
embodiments of the magnetic stud.
FIG. 4 is a plan view of a third embodiment of the magnetic
stud.
Referring now in detail to the drawings, the primary embodiment of
the magnetic stud 10 is shown in FIG. 3. The C stud shown therein
is constructed of a magnetic material and has two oppositely
disposed support surfaces 12 and 14. Each support surface has a
pair of longitudinally disposed open channels 16 therein which
extend the length of the stud and are adapted to house elongated
permanent magnets 18 therein. The third side 20 or web of the stud
also defines open channels 22. Channels 22 increase the flexibility
of the stud by allowing it to be positioned at a corner and support
both the perpendicular walls meeting at that corner. In addition
when used along a single wall, such channels strengthen the web and
stud.
The elongated permanent magnets 18 are of a rubber bonded permanent
magnet material and preferably, a rubber bonded barium ferrite
composition material such as that sold under the trademark
Plastiform by the 3-M Company. Such materials have magnetic
properties equal to those displayed by isotropic barium ferrite
sintered magnets, yet unlike the latter, they are neither hard nor
brittle and are very light in weight and easy to work with. When
the magnets 18 are placed within channels 16 an air gap 24 is seen
to exist which extends between the vertical plains defined by the
support surfaces 12 and 14 and the extended surfaces of the
magnets, while the sides of the magnets 18 abutt side portions 17
of channels 16. Such a disposition of the magnets within the
channels causes the pole pieces of each magnet to be defined by a
portion of the support surfaces, thereby increasing the effective
area through which each permanent magnet can operate whereby the
holding capacity of each magnet is increased. It should also be
noted that positioning the magnets within channels protects the
permanent magnets from abusive handling during storage and
installation.
In use, the permanent magnets 18 are placed within the channels 16
and the stud 10 extended and supported between the floor 26 and
ceiling 28. Additional studs are similarly positioned along the
line of the wall. Or, in the alternative, half studs 30 can be used
in conjunction with one or more C studs 10, as seen in FIG. 3.
Metal strips 32 are secured to the wall board 33, which may be
gypsum panel or the like, by a suitable adhesive. In the
alternative, a wallboard constructed of a magnetic material can be
employed. The wallboards 33 are then placed in position on both
sides of the studs with the metal strips 32 or magnetic wallboard
abutting the pole pieces of the magnets, i.e., the supporting
surfaces 12 and 14. A head track 34 is disposed over the upper
edges of the wallboards for support and a baseboard 36 is placed
over the lower portion on each side of the wall, as shown in FIG.
2. It should also be noted that the permanent magnets 18 need not
extend the length of the channels 16, and in fact would rarely do
so, as the mounting within channels 16 is such as to provide
sufficient holding capacity that the added expense incurred in
using longer magnets is unnecessary.
FIG. 4 is illustrative of a third embodiment of the invention, a
box stud 38. The box stud 38 or the C stud is generally used
between junctures 40 of the wallboard 33, as seen in FIG. 3. While
the half stud is often used in intermediary locations to reduce the
cost of materials. The resulting wall, shown in FIG. 3, provides a
strong and attractive partition between two rooms and one which is
easily removable without damage for redesign purposes.
These and other changes and modifications may be made in carrying
out the present invention without departing from the spirit and
scope thereof. Insofar as these changes and modifications are
within the purview of the appended claims they are to be considered
as part of the invention.
* * * * *