| 摘要 |
<p>The invention provides a system for selective extension and retraction of a support leg of equipment such as a trailer or dock leveller, comprising a fluid motor which is adapted to be mechanically connected with an actuating member of the leg whereby on operation of the motor the leg can be extended or retracted, and apparatus for mounting the system onthe equipment so that a drive line from the motor to the acutating member is non-linear.</p> |
