Ohlandt, Greeley, Ruggiero & Perle, L.L.P.
Free-wheel hub transmission mechanism
 A free-wheel hub transmission mechanism includes an axle coaxially inserted into a through hole of a spoke mounting barrel such that a right axle portion thereof extends outwardly from the spoke mounting barrel. A drive transmission block is disposed in the right end portion and has a force transmitting portion with first and second bevel faces. A sprocket mounting barrel is disposed around the right axle portion, and has a drive portion formed with a third bevel face for contacting the first bevel face. A clutch barrel is disposed around the axle, and has a coupling part threaded to the drive portion of the sprocket mounting barrel, and a block contacting part formed with a fourth bevel face for contacting the second bevel face. The clutch barrel is linearly displaceable relative to the axle to a driving position, where the clutch barrel cooperates with the sprocket mounting barrel to clamp the drive transmission block. 
Kun Teng Industry Co., Ltd.
B B B B
B60B B60B B60B B60B
inventional inventional inventional inventional
Hubert
Chen