Dual-pane thermal window with liquid crystal shade

Details Dual-pane thermal window with liquid crystal shade Dual-pane thermal window with liquid crystal shade

1987-06-25

1989-07-18

Heyman, John S.

Stock material or miscellaneous articles

Composite

Of bituminous or tarry residue

52788, 428 34, G02F 1133, E04C 254, E06B 324

Patent

active

048488755

ABSTRACT:
A dual-pane thermal window unit comprises two nonintersecting or, preferably, substantially parallel, spaced window panes, mounted in a window frame, a first of the panes having affixed thereto a first wall of an electro-optical liquid crystal cell providing a selected light transmittance, and a second of said panes delimiting, with a second wall of said cell, a space providing a thermal break. Each of the first and second walls comprises an electrically conductive film composed of plastic and having sufficient supporting strength to maintain the structural integrity of the cell. The window is light weight, economical to manufacture and efficient and reliable in operation.

REFERENCES:
patent: 3940898 (1976-03-01), Kaufman
patent: 4228574 (1980-10-01), Culley
patent: 4456335 (1984-06-01), Mumford
patent: 4527864 (1985-07-01), Dir
patent: 4556289 (1985-12-01), Fergason
patent: 4641922 (1987-02-01), Jacob
patent: 4709991 (1987-12-01), Hoshikawa

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