Regulating check valve and fuel injecton valve having the same
US7950414B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 3, 2009 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Sep 6, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7835
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve chamber is defined in a valve body of the regulating check valve. A first communicating hole and a second communicating hole communicate the valve chamber with a first flow passage and with a the second flow passage, respectively. A valve element is slidably installed in the valve chamber to seat on or lift away from a valve seat to close or open the first communicating hole. A pressure in the first flow passage urges the valve element away from the valve seat, and a pressure in the second flow passage urges the valve element toward the valve seat. The spring is interposed between the valve element and the valve body to urge the valve element away from the valve seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.