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Appliance having EMI shielding

  • US 5,774,337 A
  • Filed: 05/01/1995
  • Issued: 06/30/1998
  • Est. Priority Date: 05/01/1995
  • Status: Expired due to Term
First Claim
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1. An appliance comprising:

  • a metallic chassis including a first chassis section forming a first space, and a second chassis section mounted to said first chassis section and forming a second space;

    a metallic upright wall connected to said first chassis section;

    first and second electromagnetic wave-generating components disposed in said first space and second spaces, respectively;

    a front opening formed in said second chassis section communicating said second space with the exterior and aligned with said second electromagnetic wave-generating component; and

    a rear opening formed in said second chassis section and arranged such that said upright wall extends across and shields said rear opening;

    said second chassis section including a floor and side walls projecting upwardly therefrom, said upright wall of said first chassis section including an upwardly facing, inwardly stepped horizontally extending ledge comprising electrically conductive material on which a rear portion of said floor rests, said upright wall of said first chassis including an inwardly stepped vertical shoulder comprising electrically conductive material facing and engaging a rear end of one of said side walls of said second chassis section;

    said first and second chassis sections defining electromagnetic shielding for resisting the passage of electromagnetic waves from said first and second spaces to the exterior, and for resisting the passage of electromagnetic waves between said first and second spaces.

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