Fluid control valve
US4456218A · kind A · utility
45Cited by
11References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1983 |
| Grant date | Jun 26, 1984 |
| Priority date | — |
| Expiry date | Feb 18, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/1262
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid control valve actuated by differential pressure across a diaphragm member. The diaphragm member is secured to a piston mounted thereon with a seal ring. The seal ring is in fluid-tight sliding engagement with a casing having an inlet port and an outlet port, but is brought into disengagement from the casing upon movement of the piston due to differential pressure across the diaphragm member. Thus, communication between the inlet and the outlet ports may be accomplished.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.