Patent ID: 8459920
Filing Date: 2013-06-11
Classification: F16B,Y10T

Abstract:
1. A fastener in combination with a substrate, said substrate includes a foam backing and a slot therein, comprising: said substrate includes a front side and a back side; said foam affixed to said substrate; an upper plate having first and second longitudinal tabs and first and second transverse tabs; a longitudinal head; a shank interconnecting said upper plate and said longitudinal head; a shaft extending from said upper plate; branches extending from said shaft; said longitudinal head includes cutting edges; said fastener and said longitudinal head of said fastener being rotatable, said longitudinal head resides in alignment with said slot of said substrate; and, said cutting edges of said longitudinal head cut said foam backing of said substrate as said fastener and said longitudinal head of said fastener are rotated.