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PTC circuit protection device and manufacturing process for same

  • US 5,955,936 A
  • Filed: 05/20/1997
  • Issued: 09/21/1999
  • Est. Priority Date: 05/10/1995
  • Status: Expired due to Fees
First Claim
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1. An electrical device comprising:

  • a PTC element including a polymer with electrically conductive particles dispersed therein, said PTC element having first and second surfaces;

    a pair of conductive layers respectively contacting said first and second surfaces of said PTC element;

    a pair of electrodes, each said electrode being comprised of a metal foam material having an inner surface extending through one of said conductive layers so that said inner surface is in direct physical contact with said PTC element, and an outer surface; and

    ,a portion of said outer surface of each said electrode projecting outwardly from each conductive layer, respectively, so as to be connectable to a source of electrical power, and when so connected, causing current to flow through said PTC element.

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