Valve with cushioned opening system
US8141579B2 · kind B2 · utility
0Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2006 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Jul 31, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7835
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve including a valve body having an inlet port and an outlet port, a valve stem, a valve seat, an opening control chamber for the valve stem, which chamber, by being fed with fluid, urges the valve stem to move towards the open position of the valve, a return spring of opposing effect, and a piston suitable for sliding in the body so as to urge contact to be established between the valve stem and the seat. The valve seat is formed on the piston, which piston is provided with a bore in which the valve stem is in its closure movement, the fluid flows out via a constriction from a damping chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.