Patent ID: 8157063
Filing Date: 2012-04-17
Classification: F16D

Abstract:
1. A brake friction pad assembly comprising: a rigid backing plate having a thickness between opposed first and second faces, and being capable of transmitting vibrations across said opposed faces, said backing plate including a top edge and bottom edge spaced from said top edge, said top and bottom edges extending lengthwise of said backing plate; said backing plate including a primary extrusion opening fully bounded on all edges thereof and extending between said opposed faces; a friction-generating pad element made from a molded material and pressed into contact with said first face of said backing plate such that said molded material fills said primary extrusion opening; a noise-damping pad element which overlies and contacts a substantial portion of said second face of said backing plate, said noise-damping pad element being joined to said friction-generating pad element by said molded material contained within said primary extrusion opening; and said primary extrusion opening having a non-circular shape whereby vibrations traveling across said backing plate are substantially dampened upon encountering said non-circular shape of said primary extrusion opening, said primary extrusion opening including at least one linear edge, said linear edge oriented non-parallel and non-perpendicular to either of said top and bottom edges of said backing plate, and said primary extrusion opening further including at least one convex corner.