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Circuit board RF shielding

  • US 6,239,359 B1
  • Filed: 05/11/1999
  • Issued: 05/29/2001
  • Est. Priority Date: 05/11/1999
  • Status: Expired due to Term
First Claim
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1. An EMI shield for mounting on a first surface of a printing wiring board, the shield comprising an EMI impervious wall shaped to define a hollow space having an innermost portion spaced along a first direction from an opening into said space, a flange secured to said wall along a line completely encircling said opening and having an outer edge spaced from said line, a groove in a second surface of said flange facing in said first direction, said groove forming a closed, first loop spaced from said line and completely enclosing said opening, an electrically conducting, elastic gasket disposed within and projecting outwardly of said groove in said first direction along the entire length of said groove, and a plurality of fastening members spaced apart along said flange along a second loop encircling said opening and disposed between said flange edge and said first loop, said fastening members extending in said first direction for securing said flange against said first surface of a printed wiring board and for elastically clamping the entire length of said gasket against said first surface.

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