Patent ID: 7168659

Claim:
A device for controlling the movement of a vehicle closure element, the device comprising, interposed between a vehicle structure and a closure element, firstly a driver element that can be activated on command, constituted by a pyrotechnic actuator, and secondly mechanical connection means suitable for allowing a driving connection between the pyrotechnic actuator and the closure element when the pyrotechnic actuator is activated, while also allowing the closure element to move freely relative to the pyrotechnic actuator when the closure element is moved over a stroke greater than that enabling said driving connection, wherein the pyrotechnic actuator is an active impulse thruster having a stroke smaller than that of the closure element, so that after first displacement of the closure element following the driving operation of the pyrotechnic actuator acting as the active impulse thruster, the closure element continues to move under its own inertia over a stroke greater than that enabling said driving connection between the pyrotechnic actuator and the closure element.