Patent ID: 6249064
Filing Date: 2001-06-19
Classification: G11B,H01L

Abstract:
A disc drive, comprising:a rotatable disc on which a plurality of tracks are defined; andan actuator assembly which supports a head adjacent the tracks, comprising:a coil of an actuator motor which provides primary positioning of the head through the controlled application of current to the actuator motor coil; anda microactuator, opposite the actuator motor coil, comprising a pair of microactuator coils wound about respective magneto-striction beams so that, in response to drive currents passed through the microactuator coils, a selected one of the magneto-striction beams increases in length and the remaining one of the magneto-striction beams decreases in length, wherein the microactuator further comprises a support flange which extends adjacent the magneto-striction beams and supports a pivot assembly rigidly affixed to the magneto-striction beams and the head so that the magneto-striction beams cooperate to concurrently induce a combined rotational force on the pivot assembly in a common rotational direction to rotate the pivot assembly about an axis and displace the head to a final desired position adjacent the disc.