Refinement of spindle motor bearing gap
US6961214B2 · kind B2 · utility
7Cited by
1References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2003 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Oct 16, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B25/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system is provided for achieving good dynamic performance and negligible wear to spindle motor components. In an aspect, a disc drive storage system is provided having a hydro bearing surface coating for meeting bearing gap tolerance design specifications. In an aspect, the surface coating is a non-reactive coating of diamond like carbon (DLC), applied with physical vapor deposition (PVD). In an aspect, the surface coating nullifies any taper of an opposing surface coating. In an aspect, the hydro bearing, with an applied coating, defines a uniform gap between 0.5 microns and 6 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.