Spindle motor and method of manufacturing spindle motor
US7550887B2 · kind B2 · utility
2Cited by
1References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 28, 2005 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Feb 22, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2370/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A spindle motor in which a rotor is rotatably supported via a pair of upper and lower bushes fixed to a shaft. In a part of the rotor, upper and lower covers are fixed so as to face the upper and lower bushes each via a gap. The inner periphery of the upper cover faces the outer peripheral surface of the shaft via a small clearance in the radial direction, and the inner periphery of the lower cover shorter than the inner periphery of the upper cover faces the outer peripheral surface of the shaft via the clearance in the radial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.