| 摘要 |
<p>A piston assembly (10) comprises a fluid actuated piston (14) mounted within a cylinder (12), and a fluid actuated locking mechanism (16) mounted within the cylinder (12) for selectively locking the piston (14) relative to the cylinder (12). In one arrangement, the piston (14) and locking mechanism (16) are actuated by fluid supplied via a common fluid port (48).</p> |
