Safety shut-off valve
US4319604A · kind A · utility
16Cited by
10References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1980 |
| Grant date | Mar 16, 1982 |
| Priority date | — |
| Expiry date | Feb 19, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7792
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a safety shut-off valve, a housing includes a valve member therein, having a first valve seat, and against which a valve normally rests during closure, with a spring normally biasing said valve off of said first valve seat, and with the force of the pressurized fluid passing through the valve causing said valve to act against the force of a regulator and a second spring to become unseated for allowing gas flow, and reseated once again against a second valve seat when excessive pressure is encountered and which curtails the further flow of fluid through the valve housing, and thereby shutting off the fluid from its source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.