Gas valve
US5413311A · kind A · utility
37Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1994 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Mar 1, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K7/16
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gas flow valve having an internal valve chamber with an inlet and outlet passage, and a movable metallic diaphragm in the chamber, the diaphragm bonded to a valve stem projecting outside of the chamber. The diaphragm has a Teflon film coating which is engageable against at least one of the inlet and outlet passages in sealing relationship, and the valve stem has a spring-biasing member outside the chamber for urging the diaphragm away from sealing engagement with the inlet and outlet passages. A peripheral rib is formed in a chamber wall and the diaphragm is held in fixed relationship against the peripheral rib.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.