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Cell cap assembly having frangible tab disconnect mechanism

  • US 5,609,972 A
  • Filed: 03/04/1996
  • Issued: 03/11/1997
  • Est. Priority Date: 03/04/1996
  • Status: Expired due to Term
First Claim
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1. A cell cap subassembly for controlling pressure build-up in a cell interior having an electrode, said cell cap subassembly comprising:

  • a terminal contact for making electrical contact with an external circuit;

    a deflection member being in electrical communication with said terminal contact, said deflection member undergoing a displacement in response to an increase in pressure within the cell interior;

    a frangible member connected to and making electrical contact with said deflection member, said frangible member having a defined frangible region located away from said deflection member, wherein when said deflection member undergoes displacement in response to a first defined pressure, said frangible member breaks at said frangible region and thereby electrically disconnects said terminal contact from said electrode.

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