Primary dry cell having a novel venting closure

Details Primary dry cell having a novel venting closure Primary dry cell having a novel venting closure

1976-02-11

1977-11-01

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

429171, 429218, H01M 212

Patent

active

040566595

ABSTRACT:
A primary dry cell comprising a metal anode cup having a cathode mix therein, an open end, a central cathode rod through the open end, and a closure, the closure having a central bore and a venting sleeve defined by an annular groove in the closure and being disposed proximate the central bore.

REFERENCES:
patent: 819159 (1906-05-01), Newbold
patent: 3090824 (1963-05-01), Reilly et al.
patent: 3923548 (1975-12-01), Bell et al.

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