Gas friction pump
US6644912B2 · kind B2 · utility
0Cited by
1References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Apr 17, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D19/042
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gas friction pump, including a housing having a suction opening, a gas outlet opening, and a plurality of rotatable and stationary components arranged in the housing and having a pump-active structure for pumping gases and maintaining a pressure ratio, and an additional gas inlet formed as a longitudinal opening extending, in a longitudinal direction thereof, over a portion of an outer edge of a rotatable component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.