Tapered shaft coating
US8622844B2 · kind B2 · utility
0Cited by
22References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2010 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Feb 21, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/292
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A component of a disc drive has a coating of a predetermined length on its surface, the coating having at least two separate tapered regions applied in independent steps, the at least two separate tapered regions each having a length that is less than the predetermined length of the component surface. When the component is a shaft of a spindle motor, the ends of the shaft are masked before the tapered regions of coating are applied, and the thickness of the masks covering the shaft ends is varied to control a taper of tapered regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.