Patent ID: 7721400
Filing Date: 2010-05-25
Classification: B25C,B25D,F16B,Y10T

Abstract:
1. A plate comprising: a pair of oppositely disposed faces defining an outer face and an inner face; a plurality of spaced apart spikes project from said inner face, said spikes being grouped in pairs with at least one spike in each of said pairs is spaced an equal distance from a centerline of said inner face at each corner as compared to the other spike of said pair, and wherein each one of said spikes in each of said pairs are canted slightly toward each other in opposition to one another; and at least one pair of plate tabs integral with said plate and of selected length extend spaced apart from one another longitudinally from an end toward a center portion of said outer face, a portion of each of said tabs being bent at an angle toward said inner face forming a pair of interior spikes and an open window on each side of a generally central flat portion exposed for locking engagement with a tool disposed adjacent the outer face of said plate.