Galvanic element

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Flat-type unit cell and specific unit cell components

Patent

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Details

429174, 429177, 429185, H01M 600

Patent

active

042633800

ABSTRACT:
A galvanic element of buttom cell configuration is provided, in addition to the usual seal of thermoplastic material between cell terminal and cell cup, with an additional seal. This fills the annular gap which is created when a contact cap surrounding the galvanic element is attached to the cell terminal.
The second seal is made, for example, by casting of bitumen or casting resin into the annular gap, shaking in of synthetic plastic powder and subsequent heat treatment for attachment, or by displacement of a heat sensitive glue from the contact cap in response to pressing into the cell. Also, pre-fabricated ceramic rings with metalized surfaces, which are soldered in place betweeen cell cup and contact cap, may be used as the second seal.

REFERENCES:
patent: 3096217 (1963-07-01), Clune
patent: 3489616 (1970-01-01), Eaugradt et al.
patent: 3615861 (1971-10-01), Braem
patent: 3746580 (1973-07-01), Aker et al.
patent: 3970477 (1976-07-01), Ciliberti
patent: 3990918 (1976-11-01), Bro et al.
patent: 4118544 (1978-10-01), Przybyla et al.
patent: 4166157 (1979-08-01), McCormick

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