Rotary fluid pump or compressor
US4198195A · kind A · utility
23Cited by
4References
3Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 9, 1977 |
| Grant date | Apr 15, 1980 |
| Priority date | — |
| Expiry date | Nov 9, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2225/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A dry rotary fluid pump or compressor includes a rotor eccentrically supported in a rotor chamber generally defined by a stator housing and two end heads. Two side plates each interposed between the housing and each of the end heads form end chambers between the respective side plates and end heads. The end chambers are supplied with a pressure higher than that of the rotor chamber so as to bring the side plates into close contact with opposite side faces of the rotor. The side plates are formed of a material having an abrasion resistance higher than that of at least the opposite side faces of the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.