Techniques for reducing dynamic coupling of system modes in a dual actuator hard disk drive
US10186286B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2017 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Jun 7, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5578
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An actuator pivot assembly for a multi-actuator shared shaft data storage device may include a shared pivot shaft around which a first rotary actuator assembly is coupled, with a first bearing assembly interposed therebetween with a first bearing preload, and around which a second rotary actuator assembly is coupled, with a second bearing assembly interposed therebetween with a second different bearing preload. Furthermore, the first bearing assembly may have a first bearing span and the second bearing assembly may have a second bearing span that is different from the first bearing span. Each of the foregoing bearing features may thereby assist with spacing apart the structural resonance frequencies of the actuator assemblies to inhibit transmission of vibration between the actuators during operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.