System and method to electrically ground fluid dynamic bearings
US8248725B2 · kind B2 · utility
7Cited by
18References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2007 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Sep 24, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K11/01
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A spindle motor assembly that utilizes a fluid dynamic bearing electrically grounded to provide a conductive path through the spindle motor assembly. In one embodiment, the fluid dynamic bearing includes a liquid metal that is conductive and of low electrical resistance that provides the conductive path between the spindle and the spindle housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.