US 5,230,200 AGranted

Wallboard and method of joining wallboards

OwnerWaymon J. Douglas, Wilburn C. Douglasinventors

Life of this patent

Estimating the term…

Loading patent…

Abstract

A wallboard is formed with each of its abutting top and bottom surfaces extending from its rear surface substantially perpendicular thereto for less than 50%, preferably 371/2%, of the distance between the rear surface and the front surface. The wallboard has a convex curved surface extending from the termination of the abutting top or bottom surface to the front surface. When the abutting surfaces of two wallboards are disposed in abutting relation, a deep fill recess is formed between the curved surfaces of the two adjacent wallboards. The recess is filled with a sealing compound having a greater compression strength than the compression strength of each of the adjacent wallboards so that any compression of the wallboards is absorbed by the wallboards and not the sealing compound whereby no tape is required at the wallboard joint and no ridging occurs.

Claims22

Dependent claims

A method of forming a wallboard joint finished without tape between two wallboards including:

forming each of the two wallboards with substantially parallel front and rear surfaces;
forming each of two substantially parallel surfaces of each of the two wallboards substantially perpendicular to the rear surface of the wallboard with each of the two substantially parallel surfaces extending from the rear surface less than one-half of the distance from the rear surface of each of the two wallboards to its front surface;
forming a connecting surface from an end of each of the two substantially parallel surfaces, remote from the rear surface, of each of the two wallboards to the front surface with the connecting surface being curved at least adjacent the front surface of each of the two wallboards;
disposing one of the two substantially parallel surfaces of each of the two wallboards in abutting relation with each other to constitute two abutting surfaces so that the two wallboards are adjacent wallboards having a deep fill recess formed between the connecting surfaces of the adjacent wallboards;
and depositing a sealing compound with a greater compression strength than the compression strength of each of the adjacent wallboards in the deep fill recess formed between the connecting surfaces of the adjacent wallboards so that the sealing compound fills the deep fill recess.

2 more elements

A wallboard joint formed without tape including:

a pair of adjacent wallboards;
each of said adjacent wallboards including:
a front surface;
a rear surface substantially parallel to said front surface;
a pair of substantially parallel surfaces extending from said rear surface substantially perpendicular thereto for less than one-half of the distance between said front surface and said rear surface;
and a connecting surface extending from the termination of each of said substantially parallel surfaces to said front surface, each of said connecting surfaces being curved convexly at least adjacent the intersection with said front surface;
one of said pair of substantially parallel surfaces of one of said adjacent wallboards abutting one of said pair of substantially parallel surfaces of the other of said adjacent wallboards;
one of said connecting surfaces of each of said adjacent wallboards cooperating to form a deep fill recess therebetween;
and a sealing compound filling said deep fill recess, said sealing compound having a greater compression strength than the compression strength of each of said adjacent wallboards.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/478,933Filed 12 Feb 1990 · continuation in part
Priority: 31 Oct 1988
Granted: 27 Jul 1993
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

E04B 2/7457
With panels and support posts, extending from floor to ceiling: with wallboards attached to the outer faces of the posts, parallel to the partition
E04F 13/0891
Characterised by the joints between neighbouring elements, e.g. with joint fillings or with tongue and groove connections: with joint fillings
E04B 2/723
Non-load-bearing walls of elements of relatively thin form with respect to the thickness of the wall: constituted of gypsum elements
E04B
General building constructions