Vacuum pump
US7207782B2 · kind B2 · utility
0Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2002 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Dec 17, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C18/344
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A rotating vane vacuum pump has a secondary inlet (4) which permits additional suction after the primary inlet (3) has closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.