Transition valving by means of non-return valves
US6884048B2 · kind B2 · utility
2Cited by
8References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2002 |
| Grant date | Apr 26, 2005 |
| Priority date | — |
| Expiry date | Sep 26, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2/103
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A rotary fluid pressure device has a first oil passage with relatively high pressure fluid therein surrounding the gear set; a plurality of second oil passageways connecting the first oil passageway to the expanding and contracting oil chambers; and fluid non-return valves in each of the second oil passageways to permit the flow of oil therethrough only in a direction to the oil chambers from the first oil passageway to the oil chambers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.