Dual louver blade jalousie window

Details Dual louver blade jalousie window Dual louver blade jalousie window

1987-09-08

1989-03-21

Kannan, Philip C.

Movable or removable closures

Closures interconnected for concurrent movement

Louver-type closures

49 82, 49 91, E06B 708

Patent

active

048131830

ABSTRACT:
Jalousie apparatus is presented whereby a pair of louver blades are affixed one behind the other to a rotatable shaft for opening and closing the blades in unison. Spacers are positioned between the shaft and the louver blades having apertures which allow pressure equalization between succeeding tiers of blade pairs when columns of pairs of blades are utilized. The jalousie apparatus provides a window which forms a sealed air chamber with the louver blades closed which is highly resistant to air and water infiltration and which has a high insulation value.

REFERENCES:
patent: 857642 (1907-06-01), Lorenz
patent: 2867861 (1959-01-01), Pilson
patent: 3110937 (1963-11-01), Naslund
patent: 3123098 (1964-03-01), Bishop
patent: 3159909 (1964-12-01), Pappas
patent: 3350814 (1967-11-01), Dufrene
patent: 4493342 (1985-01-01), Bachmann

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