Check valve
US7237572B2 · kind B2 · utility
2Cited by
16References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2004 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Aug 16, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7883
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A check valve includes two opposing sheets surfaces that are coupled together to form a flow channel there between. The flow channel has a first end, a second end and at least one direction-changing portion in between the first and second ends. A first opening is provided at the first end of the flow channel and a second opening is provided at the second end of the flow channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.