Combination umbrella and inverted bi-directional valve
US7243676B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 2004 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | May 14, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7842
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A combination valve including a valve body having an inverted bi-directional valve portion and an umbrella portion is disclosed. In accordance with one aspect of the invention, a combination valve includes a valve body with a substantially cylindrical portion defining a flow path, a resilient umbrella valve portion extending annularly from the valve body and an inverted bi-directional valve portion provided in the flow path. The inverted bi-directional valve portion includes an interior surface, an exterior surface and at least one normally closed slit extending therebetween, wherein the exterior surface of the inverted bi-directional valve portion includes a generally concave curved portion when the slit is closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.