| 摘要 |
<p>SPROCKET, GEAR OR PULLEY WITH INTERCHANGEABLE RIM A sprocket, gear or pulley having an interchangeable peripheral portion for replacement. The device has a hub with an axial boss, an annular member having teeth or a groove along its outer rim and located concentrically on the boss, and a cap or a collar to hold the annular member immovable on the boss. The annular member may be segmented. The inner rim of the annular member and the boss may be threaded or splined for interengagement.</p> |
