Resealable vent valve for containers such as batteries
US4271241A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1980 |
| Grant date | Jun 2, 1981 |
| Priority date | — |
| Expiry date | Feb 5, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention pertains to a novel resealable pressure relief vent valve for use in normally sealed containers such as sealed electric batteries or cells wherein said vent valve includes an outer rigid plate, an inner flexible disc forming part of the interior of the container, said disc having one or more vent holes and a compressible rubber disc positioned in partially compressed condition between the outer rigid plate and inner flexible disc and situated over each of said vent holes whereby the inner flexible disc flexes upward breaking its seal over the said holes venting the interior of the container when excessive internal pressures occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.