Patent ID: 6386567
Filing Date: 2002-05-14
Classification: B62K,F16F

Abstract:
A bicycle with a shock absorption assembly comprising:A) a bicycle frame defining a front portion and a rear portion, said front portion and said rear portion being pivotally connected at a pivot point, B) at least one torsion spring assembly comprising: 1) an outer housing defining an inner surface, 2) a shaft defining an outer surface, 3) a rubbery substance positioned between said inner surface of said housing and said outer surface of said shaft, C) a bottom bracket housing welded to said bicycle frame, D) at least one bearing inside said bottom bracket housing, E) a bottom bracket shell to rotate inside said at least one bearing, F) at least one bearing casing threaded into said bottom bracket shell, G) a bottom bracket spindle to rotate on said at least one bearing casing, and H) a swingarm rigidly connected to said bottom bracket shell, wherein, said swingarm pivots concentrically and relative to axis formed by said bottom bracket spindle and said bottom bracket spindle rotates independently of said pivoting of said swingarm wherein, either one of said front portion or said rear portion of said frame is attached to said outer housing and the other one of said front portion or said rear portion is attached to said shaft such that shock forces acting on said front or rear portion are absorbed in said torsion spring assembly.