Valve apparatus and method
US6044859A · kind A · utility
43Cited by
25References
24Claims
0Family size
Inventor
Key dates
| Filing date | Mar 3, 1997 |
| Grant date | Apr 4, 2000 |
| Priority date | — |
| Expiry date | Mar 3, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7886
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A valve includes an inlet and outlet housing, a flexible one-way valve, and a collar. The flexible valve is locked between the housings. The collar is attached to the inlet housing and extends into the flexible valve. As fluid flows through the valve, the collar supports the flexible valve and prevents collapse due to back flow pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.