WINDOW UNIT Russian patent published in 2007 - IPC E06B9/24 

FIELD: construction units, particularly window assemblies.

SUBSTANCE: window unit comprises outer and inner glazed frames and transparent curtain arranged in-between. At least one pair of load-bearing rollers is located in upper and lower parts of space defined by the frames. One load-bearing roller is drive one. Remainder rollers may freely rotate. The curtain defines closed loop passing over load-bearing rollers and is provided with transversal strip having heat-reflective covering and transversal strip having heat-absorbing covering. The strips are separated one from another with transparent curtain material from both sides thereof.

EFFECT: possibility to maintain necessary thermal indoor conditions in dependence of outdoor climatic and weather conditions and provision of smooth regulation of thermal indoor conditions.

5 cl, 2 dwg