Solenoid operated pressure regulation
US4515176A · kind A · utility
1Cited by
12References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1982 |
| Grant date | May 7, 1985 |
| Priority date | — |
| Expiry date | Aug 4, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2615
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A normally closed line pressure regulator valve has an orifice that is opened and closed as the coil of the solenoid is energized and deenergized. When the valve is opened, the pump outlet is opened to a vent port. A line pressure relief valve in parallel with the solenoid valve opens at a predetermined pressure when the solenoid valve is closed and establishes a maximum line pressure. Minimum line pressure is determined by the pressure drops across orifices located between the outlet of the pump and the vent port. Line pressure is regulated between the maximum and minimum values by energizing and deenergizing the solenoid coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.