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Magnetically secured display apparatus

  • US 4,287,676 A
  • Filed: 05/22/1978
  • Issued: 09/08/1981
  • Est. Priority Date: 05/22/1978
  • Status: Expired due to Term
First Claim
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1. Display apparatus for magnetic securement to a ferromagnetic or paramagnetic object having a smooth surface in lateral displacement resistive relationship thereto, said apparatus comprising a support structure constituted by a sheet of self-supporting material, a display surface presented at the front face of said sheet, magnet means carried at a rear face of said sheet and positioned for developing a force of magnetic attraction to said object with said display surface presented for display purposes, said magnet means comprising a plurality of permanent magnets and means supporting said permanent magnets while permitting movement of said permanent magnets relative to said sheet to permit conformal adapsance and adherence of said permanent magnets to said smooth surface regardless of surface curvature or irregularity, said apparatus including a layer of elastomeric material associated with said magnet means and adapted for being interposed between said magnet means and said object surface with an area of said material maintained in contact with said surface by force of magnetic attraction of said magnet, said material being selected from the group consisting of plasticized polyvinyl chloride, plasticized polyvinyl acetals, and vulcanizing silicone rubber, said area of material magnetically maintained in contact with said object surface developing high intrinsic lateral adherence to said object surface for preventing said apparatus from moving laterally across said surface in response to high forces tending to laterally displace said apparatus.

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