Cornerboard protector
AssigneeCornerboard, Inc.
InventorDavid S. Collingwood
Life of this patent
Estimating the term…
Abstract
Cornerboard protector comprises laminated cardboard or paperboard with embedded reinforcement strip, which is bent at a right angle along its length, the reinforcement strip being embedded only in the unbent portion of the strip. A V-cut in the bent portion and extending into the unbent portion with its apex terminated just short of the reinforcement strip provides a mitered corner about which the laminate is folded to form a neat and strong corner protector.
Claims6
Corner protector comprising a strip of resilient, laminated cardboard having an inner and an outer surface and a flexible reinforcement strip along the length thereof embedded between the laminae of said strip near the outer surface of said laminated cardboard said strip being bent all of said laminae toward the inner surface thereof in a line along its length, said cardboard being cut, on the inner surface thereof in the unbent portion thereof through substantially all of said laminae to said reinforcement strip near the outer surface thereof, said cut being made along a line at an angle to the length of said strip, the sides of said cut forming a V-shape with the apex pointing away from said inner surface, said bent portion being cut through all of said laminae along lines continuous with the sides of said V-shaped cut in said unbent portion.
Dependencies are inferred from the claim text.