Electrically powered apparatus
US4820949A · kind A · utility
18Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1986 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Nov 17, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/1677
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrically powered apparatus is disclosed in which an axial end surface of a rotor and an axis end surface of a stator are arranged to be sliding surfaces for effecting relative sliding motion therebetween, one of the sliding surfaces being provided with grooves adapted to generate fluid dynamic pressure upon relative rotation of said surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.