Patent ID: 8701365
Filing Date: 2014-04-22
Classification: E04F

Abstract:
1. A corner bead for finishing a wallboard corner joint, comprising: a plastic body having a length, and including a first flange and a second flange each extending generally transverse to said length, each said flange having a rib edge and an opposite free edge, said respective rib edges being joined to form a corner rib and defining an angle; a web of face paper at least partially covering said body; said corner rib extends beyond a corner defined by an intersection of planes defined by said first and second flanges, has an interior and defines a hollow interior space; said plastic construction of said corner bead being reversibly deformable and configured for absorbing an impact, and for facilitating a maintenance of adhesion of said first and second flanges to the wallboard in response to the impact; at least one of said flanges tapers in thickness from said rib edge to said free edge; and said corner bead is provided with a bow camber along said length such that said body has a progressive transverse bias that is greatest at a center of said length.