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

1981-02-17

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

042516021

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 200.degree. of the top edge of the container over the cell's gasket-cover closure means so that at a predetermined high internal gas pressure build up, the gas will tip the cover of the closure means and produce a vent passage within the cell housing between the cover and the gasket of the closure means proximal the remaining arc portion of the top edge of the container.

REFERENCES:
patent: 2881368 (1959-04-01), Hancock
patent: 3219488 (1965-11-01), Southworth
patent: 3256117 (1966-06-01), Howatt et al.
patent: 3355329 (1967-11-01), Wilke et al.
patent: 3884722 (1975-05-01), Tucholski
patent: 4020241 (1977-04-01), Heinz
patent: 4063902 (1977-12-01), Heinz
patent: 4079172 (1978-03-01), Potts et al.

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