One way valve with unitary valve element
US5275309A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 1992 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | May 18, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7904
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An apparatus is disclosed for an improved one-way valve comprising a base for mounting in a chamber with a valve surface engaging with a sealing surface to close an input aperture of the chamber. A flexible web is interposed between the base and the valve surface for resiliently biasing the valve surface into engagement with the sealing surface thereby closing the input aperture. When a fluid pressure from the input aperture exceeds the resilient bias of the flexible web, the valve surface is displaced from the sealing surface for opening the input aperture to permit the flow of the liquid from the input aperture through the chamber into an output aperture. Upon a sufficient fluid pressure within the chamber, the valve surface engages with the sealing surface for closing the input aperture to inhibit the flow of fluid from the chamber into the input aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.