Pressure regulating valve
US4643225A · kind A · utility
29Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1985 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Feb 25, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87217
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A proportional solenoid operated pressure regulating valve is disclosed. First and second metering spools are respectively mounted for movement inside first and second control spools. Each metering spool responds to a fluid pressure being controlled at a respective operating port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.