Patent ID: 6254115
Filing Date: 2001-07-03
Classification: B62K

Abstract:
A bicycle front fork and head tube mounting arrangement comprising:a front fork having a tubular top shaft and an annular bearing portion disposed around a bottom end of said tubular top shaft, said annular bearing portion having a cross section curved inwards;a first ball bearing mounted on said annulur bearing portion of said front fork around said tubular top shaft;a head tube mounted around said tubular top shaft of said front fork and support on said annular bearing portion of said front fork, said head tube comprising a first cup-like end flange extended from a bottom end thereof and supported on said first ball bearing at said annular bearing portion of said front fork, and a second cup-like end flange extended from a top end thereof;a second ball bearing mounted in said second cup-like end flange of said head tube around said tubular top shaft of said front fork;a locating ring supported on said second ball bearing, said locating ring comprising an axially extended, stepped center through hole, an inner thread around said center through hole, and a tapered bottom positioning portion positioned in an inner diameter of said second ball bearing; anda split screw cap threaded into the inner thread of said locating ring around said tubular top shaft of said front fork, said split screw cap comprising a transverse screw hole across a split thereof, and an inside annular groove around an inside wall thereof;a locating screw threaded into the transverse screw hole on said split screw cap to close the split of said split screw cap; anda rubber ring mounted in the inside annular groove and disposed in contact with the periphery of said tubular top shaft of said front fork.