Battery vent plug

Details Battery vent plug Battery vent plug

1980-12-29

1982-05-04

Lefevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

Means externally releasing internal gas pressure from closed...

Elastic, resilient or spring biasing valve means

429 89, H01M 212

Patent

active

043282903

ABSTRACT:
A battery vent plug providing repeated relief of a pressure condition within a battery at relatively low internal pressures. The vent plug is arranged to prevent dropping of the internal pressure to zero upon venting while yet having a small relief-reseal pressure range. The vent plug includes a relief valve within a housing defined by a rubber cylinder releasably engaging an annular seat on the housing about an inlet to a vent chamber within the housing. The rubber cylinder is maintained under a preselected compression assuring sealing thereof to the seat at pressures below a preselected venting pressure. Upon removal of the sealing portion of the cylinder from the seat, the pressurized gas escapes around the cylinder and through a hole in the housing to atmosphere.

REFERENCES:
patent: 2114659 (1938-12-01), Warren
patent: 2690466 (1954-09-01), Kendall et al.
patent: 2690467 (1954-09-01), Kendall
patent: 2934584 (1960-04-01), Warren et al.
patent: 3096216 (1963-07-01), Warren
patent: 3201284 (1965-08-01), Ellis
patent: 3861965 (1975-01-01), O'Sullivan
patent: 4078121 (1978-03-01), Gratzmuller
patent: 4271241 (1981-06-01), Hooke et al.

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