Shock isolation bearings and travel limit gaps in a spindle motor and disk drive using the same
US6961212B1 · kind B1 · utility
53Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2001 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Dec 15, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are disk drive spindle motors and disk drives using same that include one of more structures that function as travel limit stops that are designed to transfer the load created by a shock impulse to non-essential mechanical features and bypass the bearing structures, thereby keeping the load imposed thereon by the shock impulse below damaging levels. The spindle motor may also include one or more compliant members between the bearing structures and facing surfaces. Such compliant members may be combined with pre-load keepers that preload the bearings by axially compressing the compliant members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.