One-way valve and apparatus using the valve
US7278553B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2005 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Dec 11, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7761
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An apparatus has a valve body defining a first passageway, a valve seat, and a flow aperture extending through the valve body and coupled in fluid communication with the first passageway. An elastic valve cover includes a valve portion overlying the valve seat, forming an interference fit with the valve seat, and defining an axially-extending valve opening therebetween. The valve portion is movable between a normally closed position with the valve portion engaging the valve seat, and an open position with at least a segment of the valve portion spaced away from the valve seat to allow the passage of fluid from the flow aperture through the valve opening. A hermetically sealed variable-volume storage chamber is connectible in fluid communication with the one-way valve assembly. A pump is coupled between the variable-volume storage chamber and the one-way valve assembly to dispense discrete portions of fluid through the valve assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.