Chemistry: electrical current producing apparatus – product – and – Means externally releasing internal gas pressure from closed...
Patent
1990-08-27
1992-10-20
Dixon, Jr., William R.
Chemistry: electrical current producing apparatus, product, and
Means externally releasing internal gas pressure from closed...
429 56, 429174, 429185, H01M 212
Patent
active
051569302
ABSTRACT:
A battery equipped with an opening-sealing device for sealing an opening of a battery case. The opening-sealing device has a dish-like sealing plate having a downwardly protruding portion with a valve through-hole, a valve provided on the dish-like sealing plate so as to cover the valve through-hole, and a terminal cap provided on the valve having a cutter protruded downwardly toward the valve. The valve and terminal cap are firmly held by the dish-like sealing plate with a circumferential portion of the dish-like sealing plate being bent inwardly to the valve and the terminal cap. The valve has a three-layer construction comprising a metallic thin plate, a non-adhesion type resin film, and a heat-adhesion type resin film. The non-adhesion type resin film is provided on one surface of the metallic thin plate so as to face the terminal cap and the heat-adhesion type resin film is provided on the other surface of the metallic thin plate so as to face the dish-like sealing plate and be adhered to the dish-like sealing plate by heating.
REFERENCES:
patent: 3062910 (1962-11-01), Schenk
patent: 3262819 (1966-07-01), Belove
patent: 4345611 (1982-08-01), Ikeda et al.
patent: 4783383 (1988-11-01), Machida et al.
Daio Fumio
Kojima Masaki
Dixon Jr. William R.
Green Anthony J.
Matsushita Electric - Industrial Co., Ltd.
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