Fluid dynamic bearing with wear resilient surface
US7135797B2 · kind B2 · utility
6Cited by
5References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2003 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Oct 9, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2370/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and means is provided for preserving bearing surfaces and maintaining bearing life, for use with spindle motors. In an aspect, adhesive and abrasive wear is minimized, corrosion is reduced, and bearing dynamic performance and fluid purity is maintained. In an aspect, a silicon containing copper alloy is utilized for one bearing surface and a stainless steel is utilized for an adjacent surface. The present invention also satisfies considerations including hardness, thermal expansion, thermal conductivity and use with grooved surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.