High thermal efficiency window

Details High thermal efficiency window High thermal efficiency window

1979-10-04

1981-01-20

Perham, Alfred C.

Movable or removable closures

Facially opposed primary and auxiliary closure for common...

Auxiliary mounted for movement

52473, 160107, E06B 708

Patent

active

042454352

ABSTRACT:
A high thermal efficiency window which is comprised of a low conductivity ame carrying a spaced pair of panes or lites. The space between the panes is divided into a series of vertically spaced-apart cells by a blind structure disposed between the panes, the slats of the blinds being essentially in contact with the interior faces of the panes whereby convection losses are minimized. The device is characterized by the blind being shiftable between an open or see-through configuration and a privacy configuration, the longitudinal edges of the elements defining the blinds being in contact with the interior faces of the panes in both said see-through and privacy configurations thereof.

REFERENCES:
patent: 922705 (1909-05-01), Lempert
patent: 2239528 (1941-04-01), Knudsen
patent: 2838109 (1958-06-01), Persson
patent: 3022549 (1962-02-01), Cummings
patent: 3318360 (1967-05-01), Persson
patent: 4076068 (1978-02-01), Archer et al.
patent: 4091592 (1978-05-01), Berlad et al.

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