| 摘要 |
<p>A rod actuator particularly for a mastic gun comprises wear compensation and pressure relief. The wear compensation is effected by means of a biased catch plate (24). The catch plate (24) is released from the rod (16) in the actuator by means of a sleeve (40) transmitting a releasing force applied to a brake plate (42) through to the catch plate (24). The pressure relief is provided also by the sleeve (40) riding on the rod (16) such that when the trigger is released the rod is able to retreat by a limited amount defined by the movement of the release plate (42) between a released and engaged relationship with the rod.</p> |
