| 摘要 |
<p>Motion control apparatus (2) is provided for permitting movement of a slidable member (4) in one direction relative to a fixed support (6) while releasably preventing movement in the opposite direction or for releasably preventing movement of the slidable member (4) in either direction using one or more locking arms (20) pivotally mounted on the slidable member (4) and resiliently urged into the locking position with a release rod (42) slidably mounted on the slidable member (4) to overcome the resilient urging to permit sliding movement of the slidable member (4). Also, movement preventing apparatus (40) is provided to hold at least one locking arm (20) in a non-locking location.</p> |
