Pump device for delivering a medium
US9593681B2 · kind B2 · utility
1Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 22, 2012 |
| Grant date | Mar 14, 2017 |
| Priority date | — |
| Expiry date | Sep 23, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pump device having a vane-type pump has a check valve in a fluid duct which leads from a pressure region to an under-vane region. The check valve blocks in the direction of the pressure region, preventing pressure from escaping from the under-vane region into the pressure region during the start-up of the vane-type pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.