Dual slope flow control valve
US5462253A · kind A · utility
18Cited by
16References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1994 |
| Grant date | Oct 31, 1995 |
| Priority date | — |
| Expiry date | Jul 22, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M25/0836
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid flow control valve actuated by a solenoid to selectively position the valve by balancing electromagnetic forces, spring forces and fluid forces within the valve. The valve includes a plurality of flow control orifices in series that provide flexible dual slope flow performance characteristics, precise flow control and high flow capability directed to use as a vehicle's evaporative emission control system purge valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.