The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 1989
Filed:
Aug. 22, 1988
Patrick M Kelly, Cleveland, OH (US);
Robert E Howlett, Middleburg Heights, OH (US);
Paul A Pomeroy, Spencer, OH (US);
Dennis A Alvarez, Euclid, OH (US);
USG Interiors, Inc., Chicago, IL (US);
Abstract
A drywall corner bead providing a rounded nose and two mounting flanges extending from opposite sides of the nose is formed from a strip of galvanized metal of uniform thickness. The two flanges are provided with three discrete longitudinally extending bands of reduced thickness formed by shear deformation of the material forming the band. The flanges are knurled to emboss the surface thereof and openings are formed in the flanges at intervals along their length. The corner bead is formed by a method in which shear deforming forces are progressively applied to the material forming the thinned bands to produce lateral deformation of such material without any appreciable lengthwise deformation. After the thinned bands are formed, forces are applied to straighten the corner bead. Subsequently, the flanges are knurled to provide an embossed surface and holes are punched in the flanges at intervals along their length. Thereafter, the nose is formed to its final shape and the flanges are positioned at substantially right angles relative to each other.