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Magnetic shield for visual display terminals

  • US 4,992,624 A
  • Filed: 06/12/1989
  • Issued: 02/12/1991
  • Est. Priority Date: 06/12/1989
  • Status: Expired due to Fees
First Claim
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1. A magnetic shield for being placed over a flyback transformer of a cathode ray tube display terminal and for reducing magnetic pulse and field emissions from the flyback transformer, the magnetic shield comprising:

  • a sheet of metal conductor; and

    ,a sheet of insulation, the sheet of insulation being placed upon the sheet of metal conductor and the sheets rolled to form a spiral having greater than two windings the spiral having a ductile springiness;

    attachment means for holding the sheet of insulation and the sheet of metal conductor in a rolled spiral shape.

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