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AssigneeWestern Digital Technologies, Inc.
InventorsDavid Myers, Diep Nguyen, Bikash Sukla
Estimating the term…
An approach to a reduced-head hard disk drive (HDD) involves an actuator subsystem that includes a ball screw cam assembly wherein the number of starts of a multi-start screw equals the number of balls riding in a corresponding start. A stepper motor may be disposed within the screw, to drive rotation of the screw, which drives translation of an actuator arm assembly so that a corresponding pair of read-write heads can access different magnetic-recording disks of a multiple-disk stack. The actuator subsystem may further include a cam locking mechanism for coupling and decoupling the actuator arm with a coil support structure and corresponding voice coil, so that the cam mechanism is able to move under the control of a voice coil motor when input/output operations are performed and is able to move the actuator arm assembly during translation operations.
An actuator system for a reduced-head hard disk drive (HDD), the system comprising:
A multi-phase claw-pole stepper motor configured to rotate about a fixed shaft, the stepper motor comprising:
A method for vertically translating a head-stack assembly (HSA) in a hard disk drive (HDD) to access multiple magnetic-recording disks, the method comprising:
A reduced-head hard disk drive (HDD), comprising:
Dependencies are inferred from the claim text.