Normally closed solenoid operated valve assembly with relief function
US3977649A · kind A · utility
13Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1975 |
| Grant date | Aug 31, 1976 |
| Priority date | — |
| Expiry date | Sep 4, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/406
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A normally closed solenoid operated valve assembly having a poppet movable between a valve normally closed position seating in and closing in orifice and a valve normally open position. A movable armature has a reduced section for engaging and pulling the poppet to the open position. A range spring tends to bias the poppet closed until the upstream force of fluid is sufficient to overcome the spring force. The spring force may be adjusted to vary to a predetermined value the upstream force of fluid. To open the valve, a solenoid is energized to move the armature thereby to move the poppet to the open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.