Patent ID: 6308975
Filing Date: 2001-10-30
Classification: B62K

Abstract:
A pedal bicycle having front and rear wheels wherein the rear wheel is supported on an arm structure which is pivotally connected to a main frame of the bicycle, the pivotal connection between the arm structure and the main frame being by a rubber bushed pivot bearing means having a cylindrical body of rubber bonded between inner and outer cylindrical metal shells with the outer metal shell being held fixed relative to the bicycle main frame and with the inner metal shell being held fixed relative to the arm structure which carries the rear wheel, said rubber bushed pivot bearing means so constructed and arranged that the rubber is wound elastically in torsion as the arm structure moves pivotally relative to the main frame of the bicycle, said arm structure having at a leading end a housing within which is rotatable an axle bridging two pedal cranks, said axle and a spindle of the rear wheel being parallel to one another.