Diaphragm check valves and methods of manufacture thereof
US9845895B2 · kind B2 · utility
0Cited by
54References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2014 |
| Grant date | Dec 19, 2017 |
| Priority date | — |
| Expiry date | Jun 28, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0497
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Microscale valves for use in, e.g., micropump devices, may be formed of a slitted diaphragm bonded to the interior of a valve tube. A bump in the diaphragm and/or a backward-leakage stopper may increase the breakdown pressure of the valve. A push-rod may be used to pre-load the valve membrane to thereby increase the cracking pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.