Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Patent
1991-10-29
1993-07-20
Kalafut, Stephen
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
429 56, 429 86, 429174, H01M 212
Patent
active
052292231
ABSTRACT:
A multilayer film seal for use in an air-assisted alkaline cell which comprises an organic polymeric seal member having a base with at least one opening and a porous multilayer plastic film disposed onto the base in which said multilayer plastic film comprises at least one inner layer of plastic film, such as polytetrafluoroethylene, sandwiched between two outer layers of a different plastic film that is heat sealed at least at its peripheral area to form an integral bond between the outer layers through the inner layers of the film with the inner layers being porous to air while preventing the cell's electrolyte from passing out from the cell.
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Eveready Battery Company Inc.
Kalafut Stephen
Welsh Robert W.
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