Pressure equalizing valve
US4722358A · kind A · utility
6Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1986 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Mar 12, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87643
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A pressure equalizing valve comprises a valve body with a longitudinally disposed bore therein, and a spool disposed in the bore for longitudinal movement to regulate fluid communication from an inlet port to outlet ports in response to a pressure differential between first and second sense ports disposed on first and second end faces of the valve body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.