Surge relief valve
US7302961B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2004 |
| Grant date | Dec 4, 2007 |
| Priority date | — |
| Expiry date | Jan 18, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7905
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A surge relief valve comprising a main valve body having a dome port and an inlet port. The inlet port is in fluid communication with a first fluid. The invention further includes a dome reservoir connected to the main valve body via the dome port and arranged to hold a second fluid, a piston located in the main valve body, the piston in fluid communication with the reservoir, and a dampening ring positioned around the circumference of the piston operatively arranged to dampen the piston, wherein the first fluid exerts an upward force on the piston, the second fluid exerts a downward force on the piston, and the piston is arranged to move in response to a differential in the upward and downward forces, wherein the first and second fluids are isolated from one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.