Triggered-travel jack for a safety system

摘要

A triggered-stroke actuator with its piston being held stationary in an initial position prior to triggering. The piston (13) is installed in the body (12) facing propulsion means (15) and a locking arrangement (19) that includes a latch (30) and at least one flexible tongue (23) attached to the periphery of the piston and having a hook (25) engaged with an internal abutment, the latch being moved at the beginning of triggering.

主权项

1. A triggered-stroke actuator for a safety system, the actuator comprising a body, an actuating piston movable in the body, propulsion means for propelling said piston, and a locking arrangement for locking said piston, which arrangement co-operates with an internal abutment to hold said piston stationary in a predetermined position, wherein said arrangement comprises a latch in the form of a cylindrical washer movable towards the piston by said propulsion means of said actuator in order to release said piston, and at least one flexible tongue attached to the periphery of the piston beside said propulsion means, and including a hook engaged with said internal abutment, and wherein said latch is movable between a rear position where it backs onto said hook in engagement with said internal abutment, and a front position towards a transverse wall of the piston in which it is disengaged from said hook.