Fluid bearing motor, and disk drive mounted with same
US7317271B2 · kind B2 · utility
5Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2006 |
| Grant date | Jan 8, 2008 |
| Priority date | — |
| Expiry date | May 27, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2370/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The stop ring having a surface nearly vertical to the rotational center axis, which is projected at the inner periphery of the hollow cylinder of the rotor section, and the stepped surface of the fixed shaft secured on the chassis are opposed to each other with a predetermined slight clearance provided therebetween. The clearance is filled with magnetic fluid, and further, a permanent magnet is disposed on the chassis, opposing to the other surface of the stop ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.