Gas release valve
US7951474B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2006 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Jul 29, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7888
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A gas release valve to be mounted in an access port of a battery cell includes a housing, the upper side of which is closed by a lid. The lower side of the lid has an opening leading into the battery cell and is in communication, via degassing passageways closed by an elastic sealing element, with at least one vent provided in the lid. The elastic sealing element is a preloaded non-return element, the inner surface of which is urged into sealing contact with a seat provided in the housing by it s own elasticity and, in addition, by a pressure differential with the outer pressure that acts through the vent against the outer surface of the sealing element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.