Pilot-assisted pressure relief valve
US4836240A · kind A · utility
25Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1988 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Mar 31, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7834
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved compact pilot-assisted pressure relief valve is disclosed. The invention includes a vent piston or the like hydraulically dividing the valve body bore into a hydraulic fluid chamber and a spring chamber which is vented to atmosphere, such that backpressure is eliminated entirely for both faster reaction to pressure impulses and improved accuracy in pre-load setting of the valve assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.