Pressure venting device

Details Pressure venting device Pressure venting device

1987-03-26

1988-12-06

Hearn, Brian E.

Chemistry: electrical current producing apparatus, product, and

Means externally releasing internal gas pressure from closed...

Blowout type

215253, 220207, 220367, H01M 212, B65D 5116

Patent

active

047896086

ABSTRACT:
A pressure venting device for a battery casing includes two semi-circular concavities extending upwardly from the bottom surface of the casing, two oppositely disposed bridges interrupting the concavities and two weakening or score lines disposed laterally and offset from the bridges. Since the score lines are formed in a flat area of the bottom surface of the battery casing, venting will occur consistently at a predetermined pressure range.

REFERENCES:
patent: 3831822 (1974-08-01), Zundel
patent: 4003505 (1977-01-01), Hardt
patent: 4484691 (1984-11-01), Lees
patent: 4601959 (1986-07-01), Romero
patent: 4610370 (1986-09-01), Patterson et al.

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