Spindle motor including fluid bearing and storage disk drive including the same
US8385017B2 · kind B2 · utility
9Cited by
10References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2011 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Aug 5, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2370/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a motor, an annular radially extending gap is defined between an outer annular surface and a lower surface of an annular cover portion. The radially extending gap has an axial width smaller than a maximum width of an upper seal portion defined between an outer circumferential surface of an upper thrust portion and an inner circumferential surface of a tubular portion. An annular axially extending gap is defined between an inner cylindrical surface and a radially inner edge of the annular cover portion. The axially extending gap has a radial width smaller than the maximum width of the upper seal portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.