Nonaqueous cell with improved thermoplastic sealing member

Chemistry: electrical current producing apparatus – product – and – Means externally releasing internal gas pressure from closed...

Reexamination Certificate

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Reexamination Certificate

active

07923137

ABSTRACT:
An electrochemical battery cell with an aperture in the container or cell cover has the aperture sealed by an improved thermoplastic sealing member, which forms at least a part of the cell's pressure relief vent and is made from a material comprising a thermoplastic resin and more than 10 weight percent of a thermal-stabilizing filler, to provide an effective seal and a reliable pressure relief vent over a broad temperature range.

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