| 摘要 |
<p>A bicycle sprocket drive which utilizes a crank having a number of splines and a sprocket having mating indentations or slots in its face. The splines and the mating radial slots have tapered driving faces. By cold forming the tapered slots into the front face of the sprocket, as by a stamping process, the removal of material from the sprocket is avoided. The resulting back faces of the sprocket slots, because they are displaced from the remainder of the sprocket, serve to provide the desired alignment of the drive sprocket with the rear or driven sprocket of the bicycle.</p> |
