High pressure safety vent for galvanic dry cells

Details High pressure safety vent for galvanic dry cells High pressure safety vent for galvanic dry cells

1980-03-14

1981-03-10

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Means externally releasing internal gas pressure from closed...

Elastic, resilient or spring biasing valve means

429 56, H01M 212

Patent

active

042554993

ABSTRACT:
Radially sealed galvanic dry cells having a safety high pressure vent means comprising the crimping of an arc portion between about 150.degree. and 190.degree. of the top edge of the container over the cell closure means so that after a predetermined high internal gas pressure build up, the gas will tip the closure means and produce a vent passage between the cell's container and closure means proximal the remaining arc portion of the top edge of the container.

REFERENCES:
patent: 2881368 (1959-04-01), Hancock
patent: 3256117 (1966-06-01), Howatt et al.
patent: 3355329 (1967-11-01), Wilke et al.
patent: 3494801 (1979-02-01), Urry
patent: 4020241 (1977-04-01), Heinz
patent: 4063902 (1977-12-01), Heinz
patent: 4079172 (1978-03-01), Potts et al.

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