Pressure relief apparatus for sealed containers such as galvanic cells
US4307158A · kind A · utility
12Cited by
8References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1980 |
| Grant date | Dec 22, 1981 |
| Priority date | — |
| Expiry date | Jun 30, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved pressure relief apparatus is disclosed for use with sealed containers such as those found in many galvanic cells. A specially shaped diaphragm (32, 34, 36, 38, 40) is situated across an opening (14) to the interior of the container (10), beneath a piercing point (48). When the pressure within the container reaches a preselected level, the diaphragm snaps rapidly outwardly into contact with the piercing point, thus causing itself to be pierced and relieving the accumulated pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.