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ELECTRICAL HEATERS

  • US 3,582,616 A
  • Filed: 10/29/1968
  • Issued: 06/01/1971
  • Est. Priority Date: 10/29/1968
  • Status: Expired due to Term
First Claim
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1. A hermetic electrical device having a metal sheath;

  • an electrical element disposed within said sheath, said electrical element including a pair of terminals projecting outwardly endwise of said sheath;

    electrically insulating, heat-conductive material surrounding said electrical element;

    a hermetic hightemperature seal provided within said sheath surroundingly of said terminals, said seal being fabricated from gas-impervious swageable material capable of resisting deformation at temperatures in excess of 1,000* F., said material being selected from the class consisting of mica paper and boron nitride.

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