Wallboard corners

• US 4,315,390 A
• Filed: 06/06/1980
• Issued: 02/16/1982
• Est. Priority Date: 06/06/1980
• Status: Expired due to Term

• Current Assignee: Michael Schaafsma
• Original Assignee: Michael Schaafsma
• Inventors: Schaafsma, Michael
• Primary Examiner(s): Perham, Alfred C.
• Application Number:
  US06/157,284
• Time in Patent Office: 620 Days
• Field of Search: 52/255, 52/287, 52/288, 52/468, 52/717, 52/417
• US Class Current: 52/287.1
• CPC Class Codes: E04F 19/022 for use at vertical intersections of walls E04F19/028 takes precedence

Abstract

Corner strips are provided for positioning between perpendicularly-disposed wallboard sheets to effect a curvilinear transition between the sheets. In one embodiment, a longitudinally-extending and transversely concave or inwardly curved rigid member is adapted for positioning between the sheets with the sheets perpendicularly-disposed in mutually-abutting relation. The concave member is held in the corner by an arrow-like member engaging putty-like material placed in the corner. In another embodiment, a longitudinally-extending and transversely convex or outwardly-curved rigid member is adapted for positioning between the sheets with the sheets perpendicularly-disposed in spaced-apart relation. The convex member is held to the sheets by a pair of open channels engaging the edges of the sheets. In both embodiments, wallboard tape, bonded to the concave and convex members, overlaps the wallboard sheets and effects a smooth transition between the sheets and the corner strip members. The concave and convex members may be made of aluminum or plastic material.

Claims

1. A corner strip for two perpendicularly-disposed wallboard sheets forming a corner, comprising:

means, disposed between said sheets, for effecting a curvilinear transition from one of said sheets to the other of said sheets, said effecting means comprising a longitudinally-extending and outwardly rounded member adapted for positioning between said sheets; and

a pair of open channels extending longitudinally along at least a portion of the edges of said rounded member, said channels each comprising a first member perpendicular to said edges of said rounded member and a second member perpendicular to said first member, said first and second members thereby forming a right-angle open channel for receiving the edge of one of said sheets, with said second member being positioned beneath said sheet and with said first member having a width approximately equal to the thickness of the edge of said sheet, whereby the edges of said rounded member are immediately adjacent the outer surfaces of said sheet; and

a piece of tape extending the length of said rounded member and overlapping said edges of said sheets, whereby said rounded member is held by said open channels against said sheets, with said tape effecting a smooth transition between said sheets and said rounded member.

2. A corner strip for two perpendicularly-disposed wallboard sheets, comprising:

means, disposed between said sheets, for effecting a curvilinear transition from one of said sheets to the other of said sheets, said effecting means comprising a longitudinally-extending and transversely concave member adapted for positioning between said sheets, said concave member having longitudinally-extending feathered edges for abutting relation with said sheets;

means for anchoring said effecting means against said sheets, said anchoring means comprising means, attached to said concave member, for engaging a putty-like material placed in a corner formed by said perpendicularly-disposed sheets; and

tape means, bonded to said effecting means, for overlapping and bonding to said sheets, whereby a smooth transition is achieved between said effecting means and said sheets, said tape means comprising a piece of tape extending longitudinally along said concave member and transversely past said feathered edges, whereby said concave member is held by said engaging means against said putty-like material placed in said corner, with said feathered edges and said tape effecting a smooth transition between said concave member and said sheets.

3. A corner strip as defined in claim 2 wherein:

said anchoring means comprises at least one arrow-like member projecting toward said corner, said arrow-like member longitudinally extending along at least a portion of said concave member and piercing and engaging said putty-like material placed in said corner to affix said concave member to said corner; and

said effecting means further comprises means for positioning said concave member centrally within said corner.

4. A corner strip as defined in claim 3, wherein said positioning means comprises:

a pair of supporting plates extending inwardly from said feathered edges toward said corner and extending longitudinally along at least a portion of said concave member in parallel relation to said sheets, whereby the positioning of said plates against said sheets centrally positions said concave member in said corner.

5. A corner strip as defined in claim 3, wherein said anchoring means comprises:

a pair of parallel arrow-like members extending longitudinally along substantially the entire length of said concave member, said arrow-like members piercing and engaging said putty-like material.

6. A corner strip as defined in claim 2, wherein:

said sheets comprise drywall sheets;

said putty-like material comprises drywall topping compound; and

said tape means comprises a strip of drywall tape attached to said concave member, whereby said concave member is positioned between said two perpendicularly-disposed drywall sheets forming said corner, said corner being filled with said compound, with said anchoring means affixing of said convex member to said drywall compound, and with said drywall tape lapping said concave member to said sheets.

7. A corner strip for two perpendicularly-disposed wallboard sheets, comprising:

means, disposed between said sheets, for effecting a curvilinear transistion from one of said sheets to the other of said sheets, said engaging means comprising a longitudinally-extending and transversely convex member adapted for positioning between said sheets with said sheets in spaced-apart relation;

means for anchoring said effecting means against said sheets, said anchoring means comprising means, extending longitudinally along at least a part of said convex member, for engaging the edges of said sheets; and

tape means, bonded to said effecting means, for overlapping and bonding to said sheets, whereby a smooth transition is achieved between said effecting means and said sheets, said tape means comprising a piece of tape extending the length of said convex member and past said edges, whereby said convex member is held by said engaging means in the corner formed by two perpendicularly-disposed and spaced-apart sheets, with said tape effecting a smooth transition between said convex member and said sheets.

8. A corner strip as defined in claim 7, wherein said engaging means comprises:

a pair of open channels extending longitudinally along said convex member, said channels each comprising a first member perpendicular to the longitudinal edge of said convex member, and a second member perpendicular to said first member, said first and second members thereby forming right-angle open channels along each of said longitudinal edges for receiving edge portions of said sheets, with said second member of each channel being positioned beneath its respective sheet edge and with said first member having a width of approximately equal to the thickness of its respective sheet edge, whereby said longitudinal edges of said convex member are immediately adjacent to the outer surfaces of said edges of said sheets, with said tape means covering said edges of said convex member and said edges of said sheets to effect a smooth transition from said convex member to said sheets.

9. A corner strip as defined in claim 8, wherein:

said sheets comprise drywall sheets perpendicularly-disposed in spaced-apart relation; and

said tape means comprises drywall tape attached to said convex member, whereby said convex member is positioned between said two drywall sheets, with said convex member being affixed to said sheets by said open channels, and with said drywall tape smoothly lapping the edges of said convex member to said sheets.

10.

A corner piece for two perpendicularly-disposed drywall sheets comprising:

rigid means, disposed between said sheets, for effecting a curved transition from one of said sheets to the other of said sheets, said rigid means comprising a longitudinally-extending and transversely concave member positionable in the corner formed by said two perpendicularly-disposed sheets, with said sheets in mutually abutting relation;

means for holding said rigid means against said sheets, said holding means comprising at least one arow-like member extending towards said corner from said concave member, said arrow-like member adapted to engage drywall topping compound material placed in said corner; and

tape means, attached to said rigid means, for lapping the transverse edges of said rigid means to said sheets, thereby effecting a uniform transition from said rigid means to said sheets, said tape means comprising a piece of drywall tape extending the length of said convex means and overlapping said sheets, whereby said concave member is held by said arrow-like members in said compound placed in said corner, with said tape being bonded to said sheets to effect a smooth transition between said sheets and said concave member.

11. A corner piece as defined in claim 10, wherein said rigid means further comprises:

a pair of supporting plates extending inwardly from said transverse edges of said concave member towards said corner, said supporting plates longitudinally extending along at least a portion of said concave member in parallel relation to said sheets, whereby the positioning of said plates against said sheets centrally positions said concave member in said corner.

12. A corner piece for two perpendicularly-disposed drywall sheets comprising:

rigid means, disposed between said sheets, for effecting a curved transition from one of said sheets to the other of said sheets, said rigid means comprising a longitudinally-extending and transversely convex member positionable in the corner formed by said two perpendicularly-disposed sheets with said sheets positioned in spaced-apart relation;

means for holding said rigid means against said sheets,

said holding means comprising a pair of open channels longitudinally extending along the transverse edges of said convex member, said channels receiving the edge portions of said dry wall sheets whereby said convex member is held to said sheets by said channels; and

tape means, attached to said rigid means, for lapping the transverse edges of said rigid means to said sheets, thereby effecting a uniform transition from said rigid means to said sheets, said tape means comprising a piece of drywall tape extending the length of said convex member and overlapping said edge portions of said sheets, whereby said convex member is held by said channels in said corner, with said tape effecting a smooth transition between said convex member and said sheets.

13. A corner strip for two perpendicularly-disposed wallboard sheets for forming a corner, comprising:

rigid means, disposed between said sheets, for effecting a curvilinear transition from one of said sheets to the other of said sheets, said rigid means comprising a longitudinally-extending and inwardly rounded member adapted for positioning between said sheets;

means, attached to said inwardly rounded member, for engaging a putty-like material placed in said corner;

a pair of supporting plates, extending inwardly from the edges of said inwardly-rounded member toward said corner and longitudinally extending along at least a portion of said rounded member in parallel relation to said sheets, whereby the positioning of said plates against said sheets centrally positions said rounded member in said corner; and

tape means, bonded to said rounded member, for overlapping said sheets, whereby smooth transition is achieved between said rounded member and said sheets.