Chemistry: electrical current producing apparatus – product – and – Means externally releasing internal gas pressure from closed... – Elastic – resilient or spring biasing valve means
Patent
1996-05-29
1997-08-26
Kalafut, Stephen
Chemistry: electrical current producing apparatus, product, and
Means externally releasing internal gas pressure from closed...
Elastic, resilient or spring biasing valve means
429 82, 429 85, 429177, H01M 212
Patent
active
056609426
ABSTRACT:
A leak-proof rechargable lead-acid battery cell contains a passage in cooperation with a one-way valve which allows gas to escape from the interior of the battery cell when it exceeds a predetermined pressure. In addition, electrolyte can be replenished by extending a syringe needle through suitable apertures and piercing a self-sealing rubber plug.
REFERENCES:
patent: 3994749 (1976-11-01), Decker et al.
patent: 4360573 (1982-11-01), Rao et al.
patent: 5026616 (1991-06-01), Schumm
patent: 5171647 (1992-12-01), Dean et al.
Davis David L.
Kalafut Stephen
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