Patent ID: 6478130
Filing Date: 2002-11-12
Classification: F16D

Abstract:
A clutch button comprising:a friction pad formed of a friction material having a first surface and a second surface said first surface opposing said second surface, and said friction pad having a radial outer edge and a radial inner edge said radial outer edge opposing said radial inner edge, and said friction pad having a first upper outward circumferential edge and a second upper outward circumferential edge both being adjacent to said radial outer edge, and said friction pad having a first lower outward circumferential edge and a second lower outward circumferential edge both being adjacent to said radial inner edge, and said friction pad having a first inward circumferential outer edge joining said first upper outward circumferential edge to said first lower outward circumferential edge, and said friction pad having a second inward circumferential outer edge joining said second upper outward circumferential edge to said second lower outward circumferential edge, and said first surface having a first groove formed therein extending from said first upper outward circumferential edge to one of said second upper and lower outward circumferential edges, and a second groove is formed in said first surface extending from said first lower outward circumferential edge to said another one of said second upper or lower circumferential edges said first groove does not extend to; and a backing plate bonded to said second surface.