Vent construction for batteries

Details Vent construction for batteries Vent construction for batteries

1984-04-17

1986-07-22

Hearn, Brian E.

Chemistry: electrical current producing apparatus, product, and

Means externally releasing internal gas pressure from closed...

Blowout type

429 53, 215253, 220367, 220207, 220266, H01M 212

Patent

active

046019596

ABSTRACT:
In a preferably cylindrical sheet metal casing to be hermetically sealed and having a thinwall portion, the improvement in a vent for the casing which ruptures when internal casing pressure exceeds a given value, the vent including at least one vent-forming rib projecting outward from a circular end wall thereof, said rib having formed therein a vent-forming groove which extends transversely of the length of the rib only part way along the transverse contour thereof, so that the groove ends are spaced from the base of the rib preferably a distance at least equal to the end wall thickness.

REFERENCES:
patent: 3204156 (1965-08-01), Moresi et al.
patent: 3850339 (1974-11-01), Kinkel
patent: 3851782 (1974-12-01), Clawson et al.
patent: 3918610 (1975-11-01), Willis
patent: 4175166 (1979-11-01), Rosansky
patent: 4256812 (1981-03-01), Tamura et al.
patent: 4484691 (1984-11-01), Lees

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