The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 13, 2021
Filed:
Jul. 20, 2020
Western Digital Technologies, Inc., San Jose, CA (US);
David K. Myers, Campbell, CA (US);
Western Digital Technologies, Inc., San Jose, CA (US);
Abstract
An approach to a reduced-head hard disk drive involves an actuator subsystem that includes a ball screw cam assembly wherein the number of starts of a multi-start lead screw equals the number of balls riding in a corresponding start. A stepper motor may be employed to drive rotation of a pulley or gear to which a drive belt or drive chain is attached, to transmit power to the lead screw via the drive belt or chain, thereby driving rotation of the lead screw to drive translation of an actuator arm assembly along the axis of the lead screw so that a corresponding pair of read-write heads can access different magnetic-recording disks of a multiple-disk stack.