Variable displacement vane pump
US10119540B2 · kind B2 · utility
1Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2015 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Aug 21, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2240/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A sliding vane pump includes a passageway that fluidly connects one or more pumping chambers to a side chamber. The passageway pressurizes the side chamber. This fluid pressure exerts a force that counteracts the force caused by pressure differences between the outlet pumping chambers and the inlet pumping chambers. At high speed, part of the side chamber is pressurized by the smallest volume outlet pumping chamber while another portion of the side chamber is pressurized by the largest volume outlet chamber. This results in a force counteracting an uncommanded displacement decrease of the pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.