Hydraulic vane pump
US7361001B2 · kind B2 · utility
1Cited by
7References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 11, 2005 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | May 20, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2220/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A hydraulic vane pump includes a plurality of members forming a recession and an orifice in fluid communication with one another and with rotating vane cells at an inlet sector of the pump. Air entrained in the vane cells is exhausted through the recession and the orifice prior to fluid passing from the inlet sector to a discharge sector, thereby increasing pump capacity and decreasing cavitation noise. A method of pumping fluid in a vane pump to decrease cavitation noise is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.