Patent ID: 8213126

Claim:
A suspension assembly for use in a disc drive, the disc drive including a data disc and a motor for rotating the data disc, the data disc having an axis of rotation defining an inside of the disc and further having an outer disc edge defining an outside of the disc, the suspension assembly comprising: (a) an actuator arm having: a top inside edge defined as an edge disposed away from the data disc and toward the inside of the disc; a top outside edge defined as an edge disposed away from the data disc and toward the outside of the disc; a bottom inside edge defined as an edge disposed toward the data disc and toward the inside of the disc; and a bottom outside edge defined as an edge disposed toward the data disc and toward the outside of the disc; the actuator arm having an asymmetry comprising at least one combination of: (i) a notch extending along the top inside edge of the disc, the notch along the top inside edge creating a thinner cross section at the top inside edge than at a lateral center of the arm; and no notch extending along the top outside edge of the disc; and (ii) a notch extending along a bottom outside edge of the disc, the notch along the bottom outside edge creating a thinner cross section at the bottom outside edge than at a lateral center of the arm; and no notch extending along a bottom inside edge of the disc; and (b) a load beam attached at a distal end of the actuator arm, the load beam having a slider proximate its distal end; wherein said at least one combination causes a distal end of the actuator arm to move laterally generally parallel to a surface of the disc when the actuator arm bends vertically due to vibration.