Patent ID: 7576955
Filing Date: 2009-08-18
Classification: G11B

Abstract:
1. An actuator for a disk drive, the actuator comprising: an actuator body configured to pivot about an axis; and a plurality of arms extending from the actuator body away from the axis, each of the plurality of arms including a proximal end connected to the actuator body and a distal end, the plurality of arms including an upper outer arm, a lower outer arm, and at least one inner arm; wherein the upper outer arm includes a first region of reduced width and also includes a first region of increased thickness, both such regions being located closer to the proximal end of the upper outer arm than to its distal end; wherein the lower outer arm includes a second region of reduced width and also includes a second region of increased thickness, both such regions being located closer to the proximal end of the lower outer arm than to its distal end; wherein each region of increased thickness has a minimum thickness that is more than the thickness of the at least one inner arm at an equal distance from the axis; and wherein each region of reduced width has a minimum width that is less than the minimum width of the at least one inner arm at an equal distance from the axis.