Drain valve
US9010363B2 · kind B2 · utility
22Cited by
202References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 13, 2014 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Mar 13, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7898
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drain valve allows for drainage of fluids while preventing backflow of gases from a drainage system through the drain valve. A drain valve can have a first, sealed position in which a component of the valve seals an opening through the valve and a second, open position in which the component of the valve is separated from the opening to allow a fluid to drain through the valve. When the fluid has drained through, the component of the valve can return to the closed position. The valve can include a pressure relief conduit to help equalize pressure across the valve and permit unrestrained draining of fluid through the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.