Chemistry: electrical current producing apparatus – product – and – Preserving cell in storage feature
Reexamination Certificate
2011-03-22
2011-03-22
Michener, Jennifer K. (Department: 1728)
Chemistry: electrical current producing apparatus, product, and
Preserving cell in storage feature
Reexamination Certificate
active
07910238
ABSTRACT:
An alkaline battery of the present invention includes a battery case, a power generating element housed in the interior of the battery case, and an assembled sealing part for closing the opening of the battery case. The assembled sealing part includes a resin sealing member. The sealing member includes a central cylindrical portion having a through-hole for inserting a shank of a negative electrode current collector therethrough, a peripheral cylindrical portion interposed between the periphery of the negative electrode terminal plate and the end portion of the opening of the battery case, and a joint portion for joining the central cylindrical portion and the peripheral cylindrical portion. The end portion of the opening of the battery case is curved such that the top of the peripheral cylindrical portion of the sealing member is wrapped therein, and the curved portion is crimped inward so that the periphery of the negative electrode terminal plate is fixed tightly. The sealing member includes polyamide having an equilibrium moisture content at a relative humidity of 50% of 0.9 to 1.7%.
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Kato Susumu
Sumihiro Yasushi
Wada Seiji
McDermott Will & Emery LLP
Mekhlin Eli S
Michener Jennifer K.
Panasonic Corporation
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