Patent ID: 7314226

Claim:
A folding bicycle comprising: a handle including a pair of handlebars on a top, and a front wheel on a bottom; a rear wheel including two auxiliary rear wheels at both sides, each of the auxiliary rear wheels being pivotably connected to a hub of the rear wheel through a link and being in rotating contact with the ground; a seat including a seat tube extended downward; a first crossbar having a front end pivotably connected to a lower portion of the handle above the front wheel, and a rear end fixedly connected to an intermediate portion of the seat tube; a pair of second crossbars having two front ends pivotably connected to an intermediate portion of the handle, and two rear ends fixedly connected to both ends of an hub of the rear wheel wherein the first crossbar passes an intermediate portion of the second crossbar and is pivotably connected thereto; and shock absorbing means provided at a joining portion of the seat tube and the second crossbars, the shock absorbing means being formed of a flexible material, wherein the shock absorbing means is adapted to elastically deform when a downward force is exerted on the seat.