Patent ID: 7948337
Filing Date: 2011-05-24
Classification: B82Y,G11B

Abstract:
1. An apparatus comprising: a movable member in a plane; a support assembly coupled to opposite edges of the movable member at positions lying on a first axis that passes through a centroid of the movable member, wherein the support assembly comprises first and second rigid members positioned on opposite sides of the movable member, a first suspension assembly connected between a base and the first and second rigid members, and a second suspension assembly connected between the first and second rigid members and the movable member; first and second actuators coupled to the movable member at positions offset from the first axis, and exerting forces in the plane of the movable member in directions substantially parallel to and offset from the first axis to control both linear and rotational movement of the moveable member in the plane; and third and fourth actuators coupled to the first and second rigid members at positions offset from a second axis that passes through the centroid of the movable member, and exerting forces in the plane of the movable member in directions substantially parallel to and offset from the second axis to control both linear and rotational movement of the moveable member in the plane.