Backflow valve
US7325565B1 · kind B1 · utility
1Cited by
11References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2005 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | Nov 26, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/742
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The backflow valve of the present invention includes a valve housing having a cavity therein with an inlet and an outlet to the valve cavity. A switch is in communication with the valve cavity and is moveable from an off position to an on position in response to liquid filling the valve cavity. A valve is moveable in response to the movement of the switch to the on position. The valve moves to a closed position shutting off the fluid flow through the backflow valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.