High pressure bellows valve
US5630444A · kind A · utility
11Cited by
13References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1996 |
| Grant date | May 20, 1997 |
| Priority date | — |
| Expiry date | Apr 24, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8122
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention is a bellows valve which seals the stem of the valve. Dirt and other contaminants are trapped by the bellows. The valve includes a cover having a sintered metal filter therein. The filter permits gas to flow therethrough but does not permit dirt or other particulate contamination to flow therethrough. Pressure is equalized across the wails of the bellows allowing the valve to operate at high pressures while ensuring that the gas or fluid transported through the valve is kept clean.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.