Patent ID: 7134672
Filing Date: 2006-11-14
Classification: B60G

Abstract:
1. A failsafe actuator for returning an actuator driven element to a failsafe position in case of a failure condition, said failsafe actuator comprising: a drive assembly configured to drive a plunger from a first plunger position to a second plunger position; a stored energy element configured to drive said plunger from said second plunger position to said first plunger position upon said failure condition, said actuator driven element responsive to said plunger such that said actuator driven element is in said failsafe position when said plunger is in said first plunger position; a sensor configured to indicate a relative position of said plunger; and a latching mechanism configured to maintain said plunger in said second position, and wherein said latching mechanism is configured to be actuated in response to said indicated relative position of said plunger.