| 摘要 |
<p>A piston mechanism for a vehicle safety system comprising: piston (41) and associated drive mechanism (40) for driving the piston (41) in a driving direction; and a locking arrangement positioned around or adjacent the piston (41), the locking mechanism being fixed in place with respect to the drive mechanism (40) and including a locking element (17), the locking element (17) being moveable from a first position, in which the piston may move in the driving direction with respect to the locking arrangement in a substantially unimpeded manner, and a second position, in which movement of the piston in the driving direction with respect to the locking arrangement is impeded.</p> |
