Battery vent valve
US4780378A · kind A · utility
17Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1987 |
| Grant date | Oct 25, 1988 |
| Priority date | — |
| Expiry date | Sep 2, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7889
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A relief/check valve for venting an electric storage battery comprising essentially an annular sealing member having an elastomeric skirt engaging the sloping exterior surface of a valve seat. The skirt flares outwardly from the seat in direct proportion to the pressure in the battery such as to prevent excessive build up of pressure in the battery when the gassing rate is high. The skirt quickly returns to a sealing condition when the pressure within the battery drops below the opening pressure of the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.