Patent ID: 7880410

Claim:
An actuator comprising: a rotor comprising a rotor shaft, an electromagnetic, circuit configured to produce bidirectional torque on the rotor; a rotation limitation assembly comprising: at least one stationary clockwise boundary configured to limit clockwise rotation of the rotor; at least one stationary counterclockwise boundary configured to limit counterclockwise rotation of the rotor; and a rotor stop arm connected to the rotor and configured to selectively abut the clockwise boundary and the counterclockwise boundary and thereby limit the rotation of the rotor to a predetermined angle about an axis of the rotor shaft; wherein the at least one stationary counterclockwise boundary and the at least one stationary clockwise boundary each comprise a first rebound dampening means; and wherein the rotor stop arm comprises at least one clockwise leading surface and at least one counterclockwise leading surface, wherein both the clockwise leading surface and the counterclockwise leading surface comprise a second rebound dampening means, and is the first rebound dampening means and the second rebound dampening means are configured and positioned for an at least partially embedding relationship.