Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Cell enclosure structure – e.g. – housing – casing – container,...
Patent
1980-08-08
1982-01-05
Lefevour, Charles F.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Cell enclosure structure, e.g., housing, casing, container,...
429174, 429185, H01M 202
Patent
active
043094937
ABSTRACT:
A closure for a galvanic element, and particularly a cylindrical cell, is formed in substance of a cap-like or toroidal, resilient member, whose upstanding outer rim is segmented by slits into distinct flaps. These are therefore capable of acting resiliently in a radial direction and are capable of maintaining in the sealing region a steady sealing pressure between the cup and a plastic closure member. During closing of the cell through crimping, the flaps are supported from inside by a crimper support sleeve. In this way, the plastic of the closure body is plasticized during movement of the crimping tool toward the die.
REFERENCES:
patent: 3970478 (1976-07-01), Jurva
patent: 3970479 (1976-07-01), King
patent: 4146681 (1979-03-01), Spanur
Kuhl Thomas
Sauer Hans
LeFevour Charles F.
Varta Batterie Aktiengesellschaft
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