Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Cell enclosure structure – e.g. – housing – casing – container,...
Patent
1979-07-10
1980-12-09
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Cell enclosure structure, e.g., housing, casing, container,...
429170, 429174, 429185, H01M 200
Patent
active
042385555
ABSTRACT:
A leak-proof alkaline cell comprising a positive can, a negative cap having a turned-up portion, said cap being fitted at the open end of the positive can and a gasket provided between the positive can and the negative cap, the rim of the positive can being crimped inwardly so as to press the gasket to the negative cap, the negative cap being made of a metal plate laminated with a copper layer which is adapted to be contacted with a negative electrode active material mix and the copper layer also extending to the outer surface of the negative cap facing the gasket, characterized in that the copper layer is eliminated at the ultimate terminal edge of the turned-up portion.
REFERENCES:
patent: 3673000 (1972-06-01), Ruetschi
patent: 3905835 (1975-09-01), Kasai
patent: 3990916 (1976-11-01), Sugimoto
patent: 4041219 (1977-08-01), Nishimura
patent: 4121021 (1978-10-01), Ogawa et al.
patent: 4128705 (1978-12-01), Winsel
Kirihara Sonae
Matsushima Seiichi
Taniguchi Yasuyoshi
Uetani Yoshio
Yokoyama Kenichi
Hitachi Maxell Ltd.
Skapars Anthony
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