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Illuminated advertising display device with changing visual effects

  • US 4,246,713 A
  • Filed: 06/08/1979
  • Issued: 01/27/1981
  • Est. Priority Date: 06/08/1979
  • Status: Expired due to Term
First Claim
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1. An illuminated advertising display device comprising, in combination:

  • a housing which is open at the front;

    a light source in the rear of said housing;

    a panel which has a reflective surface facing the front of the housing, said panel having a pattern of tiny holes;

    supporting means in said housing maintaining said panel in a fixed position;

    parallel guideways operatively associated with said supporting means and extending upwardly from the lower part of the housing immediately behind the panel, said guideways having rear flanges in a plane parallel to said panel;

    an opaque shutter which is mounted for reciprocating movement in said guideways and held against the panel by said rear flanges, said shutter having a pattern of transparent spots which are so arranged that each such spot registers with a hole in the panel at some point in the movement of the shutter, said spots being elongated in the direction of reciprocation of the shutter;

    means for reciprocating said shutter to sequentially register different ones of said spots with said holes for periods of time that depend upon the rate of reciprocation of the shutter and the difference between the lengths of the transparent spots and the dimensions of the holes in the direction of elongation of said spots;

    and a light transmitting reflective sheet fixed in the housing forward of the panel and in parallel, spaced relationship to said panel.

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