| 摘要 |
<p>A clutch has a coil spring (10) wound around first and second relatively rotatable members (1, 6) to transmit rotation by contraction, from the second member (6) to the first (1) in at least one direction, a one-way brake (13) acting on the coil spring (10) to prevent it contracting due to rotation of the first memeber (1), in the appropriate direction. There may be a one-way clutch (20) (Fig. 2) between the coilspring (10) and the second member (6). The arrangement may be duplicated in mirror image to provide drive from the second member (6) to the first in either direction of rotation.</p> |
