Clutch disc with friction and resilient dampers

Claim 1

An automotive clutch disc comprising: a driven member comprising a clutch hub fitted onto a rotating shaft, said hub having a flange integrally defined at the outer circumference of said hub, said flange having a plurality of openings therein; a driving member coaxial with said driven member, comprising a disc plate and a sub-disc plate, each having openings therein corresponding to the openings in said flange, and said disc plate having clutch facings mounted thereon, said plates being located adjacent said flange one on each side thereof, and said plates being connected by stopper pins; said flange also having apertures in the edge thereof corresponding to the locations of said stopper pins; damper members interposed between said plates in the openings in said flange for connecting and developing friction between said driven and driving members; and friction members interposed between said plates and said flange and connected to said driving member by said stopper pins and a key portion of said friction members which fits into a corresponding keyhole opening in one of said plates, said friction members having a projection for frictionally engaging said flange at said apertures thereby engaging said driven and said driving members, said friction members releasably contacting and thereby controlling the friction between said driven and driving members by frictional association oF said projections and said flange at said apertures at predetermined relative torsional angular displacements between said driven and driving members, thereby reducing the noise in an automotive vehicle due to excessive friction between said driven and driving members.