Dynamic pressure type bearing device
US5697709A · kind A · utility
17Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1996 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Jul 18, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S384/911
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A dynamic pressure type bearing comprises a sleeve rotatably holding a shaft driven by a motor composed of a rotor and a stator, one or both of the sleeve and the shaft being made of a resin material. The sleeve and/or shaft of a resin material may have a thin film of oil or grease formed on the surface thereof. Preferably, the resin material has load flexible temperture of 120.degree. C. or more, modules of elasticity or bending of 10 GPa or more, and coefficient of linear expansion of 3.times.10.sup.-5 /.degree.C. or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.