Metal/air cell

  • US 3,963,519 A
  • Filed: 08/03/1971
  • Issued: 06/15/1976
  • Est. Priority Date: 06/10/1968
  • Status: Expired due to Term
First Claim
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1. A unitary, compact, and completely self-contained cylinder-like metal/air cell of the flashlight type comprising a consumable metal anode, a pressure deformable cathode having a gas-permeable electrolyte impermeable outer face comprising a hydrophobic polymer and an electrocatalytic inner face, said electrocatalytic inner face being spaced in electrically non-conductive contact from said anode, and said cathode substantially completely enclosing said anode to provide a cylinder-like shape, exposed electrical contact means in electrical contact with said anode at one end of said cell and exposed electrical contact means in electrical contact with said cathode at the opposite end of said cell and an electrolyte material between said anode and cathode, said anode and cathode and both said electrical contact means being constructed and arranged to provide an electrolyte-tight seal between said anode, cathode, and electrical contact means, a substantially rigid protective shield having a plurality of perforations therein and being substantially co-extensive with said cathode, and means for spacing said shield from said cathode over substantially the entire surface area of said cathode, said means including spacer means at opposite ends of said cylinder-like cell constructed and arranged with said protective shield to secure said shield to said cell while providing a space over substantially the entire surface area of said cathode permitting access of air to said cathode through said perforations, said anode includes closure means and said closure means and said spacing means are threadedly engaged.

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