Heat-insulating roller-blind

Details Heat-insulating roller-blind Heat-insulating roller-blind

E - Fixed Constructions

06

B

160/18

E06B 3/28 (2006.01) E06B 9/24 (2006.01) E06B 9/40 (2006.01)

Patent

CA 1180264

A heat-insulating roller-blind is described, which is intended to be placed in front of a window in order to save energy in buildings. The blind consists of two thin, transparent, hermetic, congruent sheets which at their outer edges are hermetically joined to form an enclosed space. A valve is arranged to enable introduction of room air, while in an open position into the space and when the valve is closed to form a non-circulating, heat-insulating air-layer of greater than atmospheric pressure between the sheets. In the open position, the valve permits the out-flowing of the air from the space when the blind is rolled up. The roller-blind may be retained in the down position without distorting the view through the window while at the same time providing an increased insulating effect.

391755

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