Check valve
US8196597B2 · kind B2 · utility
2Cited by
11References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 22, 2007 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Dec 13, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86485
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In one aspect of the present invention, it is contemplated that a valve includes a passage. A first sealing element is biased to restrict flow of a fluid in a first direction through the passage when an upstream volumetric flow rate of the fluid in the first direction is less than a first predetermined threshold. A second sealing element is biased to unrestrict flow of the fluid to a baseline unrestricted flow rate in a second direction through the passage when an upstream volumetric flow rate of the fluid in the second direction is less than a second predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.