×

Dual-pane thermal window with liquid crystal shade

  • US 5,152,111 A
  • Filed: 03/09/1992
  • Issued: 10/06/1992
  • Est. Priority Date: 06/25/1987
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for decreasing radiative and conductive heat transfer between the exterior and the interior of a building, comprising the steps of:

  • (a) mounting within a window frame a plurality of spaced window panes, a first and a second of said panes having opposing faces;

    (b) affixing to one of the opposing faces a first wall of a liquid crystal cell, said first wall being composed of transparent, electrically conductive film and cooperating with a second wall composed of transparent electrically conductive film to form a cavity containing an electro-optically responsive liquid crystal material providing a selected light transmittance, said film being composed of plastic and said first and second walls having sufficient supporting strength to maintain the integrity of said cell;

    (c) affixing to said second wall a third wall of a second liquid crystal cell, said third wall being composed of transparent, electrically conductive film and cooperating with a fourth wall of said second liquid crystal cell composed of transparent, electrically conductive film to form a second cavity containing an electro-optically responsive liquid crystal material providing a selected light transmittance, said film being composed of plastic and said third and fourth walls having sufficient supporting strength to maintain the integrity of said cell; and

    (d) delimiting between said fourth wall of said second cell and the other of said opposing faces of said panes a space providing a thermal break.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×