Patent ID: 6032971
Filing Date: 2000-03-07
Classification: B62K

Abstract:
A folding bicycle frame characterised by a seat post with upper and lower, front and rear struts pivoted about a lower portion of the seat post, the front end of the front struts being pivotally attached to a steering-head bracket, the lower rear struts accepting a rear wheel and a substantially vertical spar pivotally interconnecting the upper rear strut to the lower rear strut or struts, a collar positionable along an upper portion of the seat post has front and rear connecting linkages that pivotally interconnect between the seat collar and the upper front and rear struts, so that sliding the collar along the seat tube changes the angle of the front and rear struts between open and folded states, and locking said seat collar at its lowermost or uppermost position fixes the frame in an open or folded state respectively.