Patent ID: 6877756

Claim:
A folding bicycle comprising: a main frame having a front end and a rear end and being integrally formed throughout the entire length of the main frame with no hinge member; a head pipe fixed on the front end of the main frame and having a rear side; a rear wheel rotatably supported on the rear end of the main frame, said rear wheel having a small gear; a handle shaft having a pivotal-support member for allowing the handle shaft to be folded, and said handle shaft being insertable into and supported by the head pipe; a front wheel fork supported by the head pipe; a front wheel rotatably mounted to the front wheel fork; a saddle post having a saddle on top thereof, said saddle post having a pivotal support portion for pivotal support on the main frame on the rear side of the head pipe; a rod-shaped stay having no hinge member, said stay having a top end detachably fixed to the saddle post at a position beneath the saddle, and said stay having a front end detachably fixed to the saddle post at a position beneath the saddle on the rear side of the main frame and a pivotal-support portion for connecting the stay to the rear side of the main frame; a crank gear rotatably supported on the main frame between the pivotal-support portion of the saddle post and the pivotal-support portion of the stay; and a chain looped over the crank gear and said small gear of the rear wheel, wherein the stay can be folded over the main frame and the saddle post can be folded along the main frame over the stay, and thereafter the handle shaft can be folded over the saddle post, the stay and the main frame in an overlaid manner.