Resealable vent valve for containers such as batteries

Details Resealable vent valve for containers such as batteries Resealable vent valve for containers such as batteries

1980-07-31

1981-11-03

Lefevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

Process of cell operation

429 54, H01M 1044

Patent

active

042986621

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 plate having a centrally-raised area, an inner plate having a centrally recessed area, said plates joined at their ends and forming a cavity therebetween, and a compressed resilient elastomeric member interposed in the cavity and positioned to overlie a vent orifice located in the inner plate, whereby during normal operation of the battery or cell the elastomeric member seals the vent orifice and when internal container pressure exceeds a predetermined limit, the elastomeric member distorts, breaking the seal and allowing the venting of the cell.

REFERENCES:
patent: 3293091 (1966-12-01), Kenney
patent: 3484301 (1969-12-01), Gray
patent: 3664878 (1972-06-01), Amthor
patent: 4086394 (1978-04-01), Tesch

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