Patent ID: 8794084

Claim:
An electromechanical actuator, comprising: a motor having a motor drive train that drives a first driven member, the first driven member operatively engaged with a second driven member that is axially movable relative to the first driven member to control movement of an output rod connected to a movable surface; a damper assembly selectively coupled to the output rod and including a damper and a damper drive train, wherein, in a normal motor operating state, the output rod is coupled to the second driven member to thereby control movement of the movable surface with the motor; and in a motor malfunction state, the damper assembly is engaged with the output rod to provide a controlled rate of return of the movable surface to a fail-safe position, and wherein the damper assembly further includes a latch that restricts movement of the output rod in a fail-safe mode of the actuator and thereby restricts movement of the movable surface.