| 摘要 |
<p>An engagement mechanism (B), e.g. used for connecting a gear (44,46) to a shaft (26), comprises caged (66) wedging elements (64) between inner and outer races (54,62) one of which has cams, the cage being moveable between engaged and disengaged positions by an axially displaceable actuator (74), controlled to produce engagement only when the races (54,62) are synchronised, e.g. by a control member (96) or electronically.</p> |
