| 摘要 |
<p>A trailer coupling having multiple locks to improve security. The coupling includes a body (10) with a movable latch (16) for enclosing the ball of a towing hitch. The latch is held in ball retaining position by a manually operable lock (30) and a key operable lock (45). Both the manually operable lock (30) and the key operable lock operate to lock the latch against movement automatically when the latch is in, or is retained. <IMAGE></p> |
