Shared disk configuration in a multiple actuator hard disk drive
US11456009B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2021 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Sep 14, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/4833
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.