Patent ID: 7128191

Claim:
An actuator assembly comprising: an actuator; an output member having a neutral position, a first actuated position, and a second actuated position, wherein the neutral position is located between the first actuated position and the second actuated position, and wherein the output member is driveable by the actuator from the neutral position to the first actuated position and to the second actuated position; and a spring arrangement including at least one spiral return spring, wherein the spring arrangement is arranged to bias the output member towards the neutral position from the first actuated position and is arranged to bias the output member towards the neutral position from the second actuated position, wherein the at least one spiral return spring includes a first spiral return spring that biases the output member from the first actuated position towards the neutral position and a second spiral return spring that biases the output member from the second actuated position towards the neutral position, and wherein the first spiral return spring and the second spiral return spring are pre-tensioned in the neutral position.