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:
Sep. 27, 2022
Filed:
Sep. 14, 2021
Western Digital Technologies, Inc., San Jose, CA (US);
Yanning Liu, San Jose, CA (US);
Western Digital Technologies, Inc., San Jose, CA (US);
Abstract
A multiple-actuator hard disk drive includes multiple head-stack assemblies (HSA) and a disk stack including a shared disk operated upon by both of the HSAs. Generally to provide more space between the HSAs such as for routing electrical traces, the distance between the shared disk and each of the upper and lower adjacent disks is greater than the distance between each of the upper and lower adjacent disks and the next adjacent disk. Each arm tip of the arms operating upon the shared disk may be thicker than other arm(s) operating upon other disks in the stack, so that the z-height between each head slider and corresponding disk surface is maintained in view of the differing disk spacing. Suspension tails for the arms that operate on the shared disk may be biased to offset away from the shared disk to provide for more clearance between the HSAs.