发明授权
US5233885A Axle structure for bicycles 失效
自行车车桥结构

Axle structure for bicycles
摘要:
An axle structure for driving a bicycle includes an axle rotatably mounted in an axle housing which is rigidly connected within a shell to transfer forces received from a pair of cranks to a driven chain wheel to drive the bicycle forward.
信息查询
0/0