Method of manufacturing a fluid dynamic bearing applicable to a disk drive that includes welding a cover member to a cylindrical wall of a shaft base
US7092203B2 · kind B2 · utility
15Cited by
9References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2004 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Jan 15, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49639
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing a fluid dynamic bearing in which a stopper is fixed by welding. The bearing comprises a hub, a shaft erected on the hub, a sleeve, a cylindrical wall erected on the hub, and the stopper mounted on the cylindrical wall. The method comprises a first step to hold oil in the bearing gap, and a second step to locate the stopper on the peripheral wall being apart from the interface of the oil to fix the stopper by LASER welding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.