Bidirectional valve with improved threshold pressure accuracy
US9901676B2 · kind B2 · utility
6Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 2014 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Sep 30, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2039/246
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bidirectional valve for medical use or the like provides different threshold opening pressures in different directions using a valve seat and flapper construction providing improved characterization in operation in contrast to cross-slit valves often used for bidirectional operation. A valve disk supported in a central annular region provides movable portions engaging in valve seats at a peripheral region and a central region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.