Patent ID: 6371264
Filing Date: 2002-04-16
Classification: F16F

Abstract:
A shock absorber comprising:a pressure tube forming a working chamber; a piston body slidably disposed within said working chamber, said piston body dividing said working chamber into an upper working chamber and a lower working chamber, said piston body defining a rebound passage extending through said piston body; a piston rod attached to said piston body, said piston rod extending through one end of said pressure tube; a rebound valve assembly attached to said piston rod abutting said piston body, said rebound valve assembly comprising: a spacer attached to said piston rod abutting said piston body; a nut threadingly received on said piston rod, abutting said spacer; a bleed valve disc having a first outer diameter disposed between said piston body and said nut, said bleed valve disc abutting said piston body to close said rebound passage, said bleed valve disc and said piston body defining a continuously open bleed flow bypass between said upper and lower working chambers; a fulcrum disc disposed between said bleed valve disc and said nut, said fulcrum disc being smaller in diameter than said bleed valve disc to define a fulcrum point for said bleed valve disc; a rebound retainer having a second outer diameter greater than said first outer diameter and being disposed between said fulcrum disc and said nut, said rebound retainer being located directly below and spaced from an outer circumferential edge of said bleed valve disc; and a rebound spring abutting said rebound retainer said rebound spring being disposed between said rebound retainer and said nut, said rebound spring producing a biasing load urging said bleed valve disc towards said piston body.