Vane pump with flexible tongue valve
US4758141A · kind A · utility
3Cited by
6References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 8, 1987 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | Jun 8, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7891
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vane pump having a plurality of working chambers each of whose volume changes from a minimum to a maximum value and back again during one revolution, and wherein intake and delivery ports open axially into the working cells and are formed with cross sections adapted for fluid conveyance without internal compression. Such compression is achieved by a valve plate which forms a non-return and is formed with a resilient tongue valve which, commencing from the starting end of the delivery port controls, upon proper pump operation, about two-thirds of the cross section of the mouth of the delivery port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.