Fan motor
US4969797A · kind A · utility
18Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1989 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Mar 22, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C33/107
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rotor shaft provided with a fan is rotatably supported by pneumatic bearings for the purpose of high speed rotation with low noise. The rotor shaft provided with the fan can also be supported at one end by a resilient bearing so as to provide high speed rotation even if the concentricity of the bearings is low.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.