Renner, Otto, Boisselle & Sklar, LLP
Freewheeling hub device for a bicycle
A freewheeling hub device is adapted to be mounted rotatably on an axle of a bicycle, and includes a hub shell which can be driven by a clockwise rotation of a driving barrel to rotate for forward movement of a bicycle wheel when a coupling socket engages threadedly the driving barrel and engages frictionally the hub shell. A coiled spring is disposed between the hub shell and the coupling socket such that a sudden termination of the clockwise rotation of the driving barrel, while the bicycle wheel continues with the forward movement due to the action of inertia, imparts a force from the hub shell to transmit to and along the coiled spring, which can drive the coupling socket to rotate clockwise to permit screwing-out movement of the coupling socket relative to the driving barrel, thereby disengaging the coupling socket from the hub shell so as not to rotate the driving barrel as well as bicycle pedals and thereby preventing the rider's legs from injury when the bicycle is pulled to move backward using the rider's hands.
Kun Teng Industry Co., Ltd.
F
F16D
inventional
Hubert
Chen