CA2106340A1 - Wall panel corner bead - Google Patents
Wall panel corner beadInfo
- Publication number
- CA2106340A1 CA2106340A1 CA 2106340 CA2106340A CA2106340A1 CA 2106340 A1 CA2106340 A1 CA 2106340A1 CA 2106340 CA2106340 CA 2106340 CA 2106340 A CA2106340 A CA 2106340A CA 2106340 A1 CA2106340 A1 CA 2106340A1
- Authority
- CA
- Canada
- Prior art keywords
- strip
- corner
- notch
- corner bead
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Abstract
ABSTRACT OF THE DISCLOSURE
A corner bead strip for attachment to wall panels at panel corners includes a strip of flexible material of substantially uniform thickness, having an inward face for fitting against the wall panels, and an outward face, and having two longitudinal edges, a longitudinal notch in the inward face to permit the strip to bend to fit a corner of any cross-sectional angle. The notch may have either a V-shaped cross-section or a semi-circular cross-section. The notch is preferably centrally located on the strip between the longitudinal edges. The strip of material is preferably formed of a plastic, and the plastic is preferably polyvinyl chloride. At least one of the two longitudinal edges is preferably beveled so that the outward face is narrowed relative to the inward face.
A corner bead strip for attachment to wall panels at panel corners includes a strip of flexible material of substantially uniform thickness, having an inward face for fitting against the wall panels, and an outward face, and having two longitudinal edges, a longitudinal notch in the inward face to permit the strip to bend to fit a corner of any cross-sectional angle. The notch may have either a V-shaped cross-section or a semi-circular cross-section. The notch is preferably centrally located on the strip between the longitudinal edges. The strip of material is preferably formed of a plastic, and the plastic is preferably polyvinyl chloride. At least one of the two longitudinal edges is preferably beveled so that the outward face is narrowed relative to the inward face.
Description
21063~0 Patent File No. 9662 wa~ PANEL CO}~NEB. BEAD
BACXGROUND OF THE INVENTION
l. Field of the Invention:
The present invention relates generally to the field of corner ~e~ds f~r cover~ng jo~nts where wall panels meet and fo~.m corners and for providing a supporting surface at these corners for receiving a layer of plaster, and more specifically to a corner bead strip formed of a flexible plastic such as polyvinyl chloride (PVC), having an inward face for fitting against the wall panels and an outward face for receiving a layer of plaster, and having two beveled, longitudinal edges, and a central, longitudinal notch in the inward face to permit the strip to bend laterally and fit precisely into or around a panel joint corner of any cross-sectional angle, the notch preferably being V-shaped or semicircular, the strip being thin, to minimize the quantity and drying time of the deposited layer of plaster, and being of essentially uniform thickness so that the layer of plaster applied over the strip is also of uniform thickness and strength.
BACXGROUND OF THE INVENTION
l. Field of the Invention:
The present invention relates generally to the field of corner ~e~ds f~r cover~ng jo~nts where wall panels meet and fo~.m corners and for providing a supporting surface at these corners for receiving a layer of plaster, and more specifically to a corner bead strip formed of a flexible plastic such as polyvinyl chloride (PVC), having an inward face for fitting against the wall panels and an outward face for receiving a layer of plaster, and having two beveled, longitudinal edges, and a central, longitudinal notch in the inward face to permit the strip to bend laterally and fit precisely into or around a panel joint corner of any cross-sectional angle, the notch preferably being V-shaped or semicircular, the strip being thin, to minimize the quantity and drying time of the deposited layer of plaster, and being of essentially uniform thickness so that the layer of plaster applied over the strip is also of uniform thickness and strength.
2. Description of the Prior Art~
There have long been corner beads for joining wall panels at inside and outside panel corners and for providing a surface for supporting an outer layer of plaster or joint cement. Problems 210634~
h these prior corner beads have included complexity and expense, unsightly protrusions, and fixed L-shapes which are inefficient for bead storage.
Lamb, U.S. Patent Number 4,313,991, issued on February 2, 1982, discloses a seam covering device in the form of a strip of tape. The strip has a plastic, planar body with tapered edges.
An adhesive is provided on the panel side of the strip and a central projection is provided on the outward side. A central longitudinal notch may extend along the surface of the projection or along the adhesive side of the strip. The notch permits the strip be bent around an outer corner or into an interior corner.
The purpose of the central projection is primarily to angle a trowel outward at the middle of the strip during plastering, to automatically feather edge the plaster at the strip edges. A
problem with Lamb is that the central elevation also causes the trowel to feather edge the plaster at the middle sf the strip.
This could expose part of the strip and make the very thin plaster at the middle of the strip more likely to peal and chip. Another problem is that more plaster would apparently be needed to cover around the projection, and the projection would cause an unsightly central bulge. Finally, the projection in the strip would hinder compact storage and shipment, and piling in stable stacks.
Moore, U.S. Patent Number 4,157,271, issued on June 5, 1979, teaches a drywall joint filler device for covering a gap between two panels. The device takes the form of a flexible strip of plastic which tapers from a central line on its outer side, to its . ~ . " ~. . . ~:
ges. The strip has an inner adhesive side with a central spline which extends into the space between the panels to locate the joint. Spurs may extend from the spline to help anchor the strip in the plaster. This embodiment is intended for inside corners.
Another variation is provided for outside corners, having a central groove on its inner side for ease of bending. A problem with the inside corner version of Moore is that the spline will not fit into a corner having no panel gap or only a very small gap. A problem with the outside corner version is similar to that of Lamb. The trowel may rest on the central peak and cause the plaster to be very thin near the peak and thus peal and chip away from the strip.
Weidy, U.S. Patent Number 5,048,247, issued on September 17, 1991, reveals an arch corner bead in the form of an L-shaped strip.
The bead has two leg portions connected at a central plastic cylinder. One leg portion is split into a series of leg sections to permit the leg portion to expand or contract as necessary to fit along longitudinally curved panel corners. A problem with the Weidy strips is that they are fixed in the L-shaped configuration.
A quantity of the strips is thus bulky to store and ship. Another problem is that the strip only fits 90 degree corners, and some architectural designs include a variety of corner angles.
Robinson, U.S. Patent Number 2,904,856, issued on September 22, 1959, discloses a corner bead having an L-shaped electro-~ondized and galvanized outer metal strip. An outwardly bowed portion connects the leg portions of the L-shaped strip. A layer of paper is attached with rubber based glue to the inner side of 21063~0 metal strip. Holes are provided in the leg portions for receiving some of the joint cement, for improved adhesion. A
problem with Robinson is that the bead structure is complex and expensive to manufacture. Another problem is that the fixed L-shape creates bulk during storage and shipping.
Schneller, 'J.S. Patent Number 4,763,455, issued on August 16,1988, teaches an interior corner drywall bead including a perforated, L-shaped metal strip. The strip is affixed with staples to adjacent panels and covered with joint cement. The strip is bent to form a longitudinal inner channel where the strip leg portions meet to create a free floating condition of the leg portions to permit a change of angle between the wall boards without causing the joint cement to crack. A problem with Schneller is, once again, that the fixed L-shape prevents compact stacking for transport and storage. Another problem is that the metal construction, the several bends in the metal and the perforations make Schneller expensive to manufacture.
It is thus an object of the present invention to provide a corner bead which can be applied to either an inside or an outside corner having any cross-sectional angle.
It is another object of the present invention to provide such a corner bead which can be compactly stored and transported in a flat configuration.
It is still another object of the present invention to provide such a bead which has a consistent elevation across its outward face essentially parallel with the underlying wall boards, so that a ubstantially uniform layer of joint cement or ~ a~s~ ~ ~a~ be applied over the bead for uniform strength and durability.
It is finally an object of the present invention to provide such a corner bead which is simple in design, reliable and inexpensive to manufacture.
.
210634~
SU~IARY OF THE INVENTION
The present invention accomplishes the above-stated objectives, as well as others, as may be determined by a fair reading and interpretation of the entire specification.
A corner bead strip is provided for attachment to wall panels at panel corners, including a strip of flexible material of substantially uniform thic~ness, having an inward face for fitting against the wall panels, and an outward face, and having two longitudinal edges, a longitudinal notch in the inward face to permit the strip to bend to fit a corner of any angle. The notch may have either a V-shaped cross-section or a semi-circ~llar cross~
section. The notch is preferably centrally located on the strip.
The strip of material is preferably a plastic, and the plastic is preferably polyvinyl chloride. At least one of the two longitudinal edges is preferably beveled so that the outward face is narrowed relative to the inward face.
BRIEF DESCRIPTION OF THE DRAWINGS 21~ 6 3 4 o Various other objects, advantages, and features of the invention will become apparent to those skilled in the art from the following discussion taken in conjunction with the following drawings, in which:
FIGURE 1 is a cross-sectional end view of the preferred embodiment of the inventive corner bead strip.
FIGURE 2 is a perspective view of the preferred embodiment of the inventive corner bead strip.
FIGURE 3 is a cross-sectional view of an inside panel corner fitted with the inventive corner bead strip.
FIGURE 4 is a cross-sectional view of an outside panel corner fitted with the inventive corner bead strip. ~
21063~0 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure.
Reference is now made to the drawings, wherein like characterlstlcs and features of the present invention shown in the various FIGURES are designated by the same reference numerals.
First Preferred Embodiment Referring to FIGURES 1 and 2, a corner bead strip 10 is disclosed for joining wall panels 12 meeting to form an inside corner 14 or an outside corner 16 and for providing a supporting surface for receiving a layer of plaster or joint cement 20. Strip 10 has an inward face 24 for fitting against panels 12 and an outward face 22, and is of uniform thickness so that the layer of plaster or joint cement 20 applied over outward face 22 is of uniform, reliable strength. The longitudinal edges 26 of strip 10 are preferably beveled. A central, longitudinal notch 30 is provided in inward face 24 to permit strip 10 to bend laterally to fit precisely into an inside corner 14 or around an outside corner ::
: : - :. : . -: '' , .' ~:
- 21063~0 : of any cross-sectional angle. See FIGURES 3 and 4 respectively.
Notch 30 may have a V-shape or semicircular cross-section, or any other suitable configuration.
Strip 10 is preferably thin to minimize the guantity and drying time of the plaster or joint cement layer 20 deposited over outward face 22. Strip 10 is preferably formed of a flexible plastic such as polyvinyl chloride (PVC), and may be fastened to panels 12 with an adhesive, staples, or any other suitable means.
While the invention has been described, disclosed, illustrated and shown in various terms or certain embodiments or modifications which it has assumed in practice, the scope of the invention is not intended to be, nor should it be deemed to be, limited thereby and such other modifications or embodiments as may be suggested by the teachings herein are particularly reserved especially as they fall within the breadth and scope of the claims here appended.
There have long been corner beads for joining wall panels at inside and outside panel corners and for providing a surface for supporting an outer layer of plaster or joint cement. Problems 210634~
h these prior corner beads have included complexity and expense, unsightly protrusions, and fixed L-shapes which are inefficient for bead storage.
Lamb, U.S. Patent Number 4,313,991, issued on February 2, 1982, discloses a seam covering device in the form of a strip of tape. The strip has a plastic, planar body with tapered edges.
An adhesive is provided on the panel side of the strip and a central projection is provided on the outward side. A central longitudinal notch may extend along the surface of the projection or along the adhesive side of the strip. The notch permits the strip be bent around an outer corner or into an interior corner.
The purpose of the central projection is primarily to angle a trowel outward at the middle of the strip during plastering, to automatically feather edge the plaster at the strip edges. A
problem with Lamb is that the central elevation also causes the trowel to feather edge the plaster at the middle sf the strip.
This could expose part of the strip and make the very thin plaster at the middle of the strip more likely to peal and chip. Another problem is that more plaster would apparently be needed to cover around the projection, and the projection would cause an unsightly central bulge. Finally, the projection in the strip would hinder compact storage and shipment, and piling in stable stacks.
Moore, U.S. Patent Number 4,157,271, issued on June 5, 1979, teaches a drywall joint filler device for covering a gap between two panels. The device takes the form of a flexible strip of plastic which tapers from a central line on its outer side, to its . ~ . " ~. . . ~:
ges. The strip has an inner adhesive side with a central spline which extends into the space between the panels to locate the joint. Spurs may extend from the spline to help anchor the strip in the plaster. This embodiment is intended for inside corners.
Another variation is provided for outside corners, having a central groove on its inner side for ease of bending. A problem with the inside corner version of Moore is that the spline will not fit into a corner having no panel gap or only a very small gap. A problem with the outside corner version is similar to that of Lamb. The trowel may rest on the central peak and cause the plaster to be very thin near the peak and thus peal and chip away from the strip.
Weidy, U.S. Patent Number 5,048,247, issued on September 17, 1991, reveals an arch corner bead in the form of an L-shaped strip.
The bead has two leg portions connected at a central plastic cylinder. One leg portion is split into a series of leg sections to permit the leg portion to expand or contract as necessary to fit along longitudinally curved panel corners. A problem with the Weidy strips is that they are fixed in the L-shaped configuration.
A quantity of the strips is thus bulky to store and ship. Another problem is that the strip only fits 90 degree corners, and some architectural designs include a variety of corner angles.
Robinson, U.S. Patent Number 2,904,856, issued on September 22, 1959, discloses a corner bead having an L-shaped electro-~ondized and galvanized outer metal strip. An outwardly bowed portion connects the leg portions of the L-shaped strip. A layer of paper is attached with rubber based glue to the inner side of 21063~0 metal strip. Holes are provided in the leg portions for receiving some of the joint cement, for improved adhesion. A
problem with Robinson is that the bead structure is complex and expensive to manufacture. Another problem is that the fixed L-shape creates bulk during storage and shipping.
Schneller, 'J.S. Patent Number 4,763,455, issued on August 16,1988, teaches an interior corner drywall bead including a perforated, L-shaped metal strip. The strip is affixed with staples to adjacent panels and covered with joint cement. The strip is bent to form a longitudinal inner channel where the strip leg portions meet to create a free floating condition of the leg portions to permit a change of angle between the wall boards without causing the joint cement to crack. A problem with Schneller is, once again, that the fixed L-shape prevents compact stacking for transport and storage. Another problem is that the metal construction, the several bends in the metal and the perforations make Schneller expensive to manufacture.
It is thus an object of the present invention to provide a corner bead which can be applied to either an inside or an outside corner having any cross-sectional angle.
It is another object of the present invention to provide such a corner bead which can be compactly stored and transported in a flat configuration.
It is still another object of the present invention to provide such a bead which has a consistent elevation across its outward face essentially parallel with the underlying wall boards, so that a ubstantially uniform layer of joint cement or ~ a~s~ ~ ~a~ be applied over the bead for uniform strength and durability.
It is finally an object of the present invention to provide such a corner bead which is simple in design, reliable and inexpensive to manufacture.
.
210634~
SU~IARY OF THE INVENTION
The present invention accomplishes the above-stated objectives, as well as others, as may be determined by a fair reading and interpretation of the entire specification.
A corner bead strip is provided for attachment to wall panels at panel corners, including a strip of flexible material of substantially uniform thic~ness, having an inward face for fitting against the wall panels, and an outward face, and having two longitudinal edges, a longitudinal notch in the inward face to permit the strip to bend to fit a corner of any angle. The notch may have either a V-shaped cross-section or a semi-circ~llar cross~
section. The notch is preferably centrally located on the strip.
The strip of material is preferably a plastic, and the plastic is preferably polyvinyl chloride. At least one of the two longitudinal edges is preferably beveled so that the outward face is narrowed relative to the inward face.
BRIEF DESCRIPTION OF THE DRAWINGS 21~ 6 3 4 o Various other objects, advantages, and features of the invention will become apparent to those skilled in the art from the following discussion taken in conjunction with the following drawings, in which:
FIGURE 1 is a cross-sectional end view of the preferred embodiment of the inventive corner bead strip.
FIGURE 2 is a perspective view of the preferred embodiment of the inventive corner bead strip.
FIGURE 3 is a cross-sectional view of an inside panel corner fitted with the inventive corner bead strip.
FIGURE 4 is a cross-sectional view of an outside panel corner fitted with the inventive corner bead strip. ~
21063~0 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure.
Reference is now made to the drawings, wherein like characterlstlcs and features of the present invention shown in the various FIGURES are designated by the same reference numerals.
First Preferred Embodiment Referring to FIGURES 1 and 2, a corner bead strip 10 is disclosed for joining wall panels 12 meeting to form an inside corner 14 or an outside corner 16 and for providing a supporting surface for receiving a layer of plaster or joint cement 20. Strip 10 has an inward face 24 for fitting against panels 12 and an outward face 22, and is of uniform thickness so that the layer of plaster or joint cement 20 applied over outward face 22 is of uniform, reliable strength. The longitudinal edges 26 of strip 10 are preferably beveled. A central, longitudinal notch 30 is provided in inward face 24 to permit strip 10 to bend laterally to fit precisely into an inside corner 14 or around an outside corner ::
: : - :. : . -: '' , .' ~:
- 21063~0 : of any cross-sectional angle. See FIGURES 3 and 4 respectively.
Notch 30 may have a V-shape or semicircular cross-section, or any other suitable configuration.
Strip 10 is preferably thin to minimize the guantity and drying time of the plaster or joint cement layer 20 deposited over outward face 22. Strip 10 is preferably formed of a flexible plastic such as polyvinyl chloride (PVC), and may be fastened to panels 12 with an adhesive, staples, or any other suitable means.
While the invention has been described, disclosed, illustrated and shown in various terms or certain embodiments or modifications which it has assumed in practice, the scope of the invention is not intended to be, nor should it be deemed to be, limited thereby and such other modifications or embodiments as may be suggested by the teachings herein are particularly reserved especially as they fall within the breadth and scope of the claims here appended.
Claims (7)
1. A corner bead strip for attachment to wall panels at panel corners, comprising:
a strip of flexible material of substantially uniform thickness, having an inward face for fitting against said wall panels, and an outward face, and having two longitudinal edges, a longitudinal notch in said inward face to permit said strip to bend to fit a corner of any cross-sectional angle.
a strip of flexible material of substantially uniform thickness, having an inward face for fitting against said wall panels, and an outward face, and having two longitudinal edges, a longitudinal notch in said inward face to permit said strip to bend to fit a corner of any cross-sectional angle.
2. A corner bead according to claim 1, wherein said notch has a V-shaped cross-section.
3. A corner bead according to claim 1, wherein said notch has a semi-circular cross-section.
4. A corner bead according to claim 1, wherein said notch is centrally located between said longitudinal edges.
5. A corner bead according to claim 1, wherein said strip of material is formed of a plastic.
6. A corner bead according to claim 5, wherein said plastic is polyvinyl chloride.
7. A corner bead according to claim 1, wherein one of said two longitudinal edges is beveled such that said outward face is narrowed relative to said inward face.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US6224893A | 1993-05-17 | 1993-05-17 | |
| US08/062,248 | 1993-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2106340A1 true CA2106340A1 (en) | 1994-11-18 |
Family
ID=22041201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2106340 Abandoned CA2106340A1 (en) | 1993-05-17 | 1993-09-16 | Wall panel corner bead |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2106340A1 (en) |
-
1993
- 1993-09-16 CA CA 2106340 patent/CA2106340A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |