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Electrochemical cell having a safety vent closure

  • US 5,418,084 A
  • Filed: 11/23/1992
  • Issued: 05/23/1995
  • Est. Priority Date: 11/23/1992
  • Status: Expired due to Term
First Claim
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1. The invention relates to an electrochemical cell comprising:

  • (a) an electrode assembly containing a first electrode and a second electrode of opposite polarity;

    (b) a housing containing said electrode assembly and a means for providing a terminal for the first electrode;

    (c) a cover assembly for said housing, said cover assembly comprising a cover member electrically insulated from the housing and containing at least one vent orifice defined by an extended wall of said cover extending into the housing and having a sealing member closing said vent orifice;

    (d) an electrically conductive spring comprising a folded elongated member in which the surface defines at least two openings that are axially aligned and two openings of which are spaced apart to form spring means of the folded elongated member, and the extended wall forming the vent orifice of the cover projected through said openings in the folded conductive spring and making electrical contact with said cover member; and

    (e) one of said first and second electrodes electrically contacting the conductive spring thereby adapting the cover as a terminal for the second electrode.

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