Orifice device with safety shut-off for pressure regulators
US4195656A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1978 |
| Grant date | Apr 1, 1980 |
| Priority date | — |
| Expiry date | Jul 7, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7929
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A pressure regulator of the spring loaded diaphragm type having a chamber on one side of the diaphragm and provided with an inlet and an outlet separated by a transverse wall into which an orifice device is mounted for stopping the flow of gas through the regulator during excess flow or low outlet pressure conditions. During normal operation the valve element actuated by the diaphragm will co-act with the valve seat of the orifice device to regulate the thruput flow, while engaging a valve stem of the orifice device to hold the same open. The orifice device has a body through which the valve stem extends. A helical spring interconnects the body and the valve stem by being separately threaded to each component whereby the orifice device is normally biased in a closed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.