CURTAIN DEVICE Russian patent published in 1998 - IPC

FIELD: heat shield of fenestrations enclosing buildings and constructions. SUBSTANCE: device uses a shield of two-layer polymeric material with corrugations and a pulley block system. The shield is made of two transparent vertical fabrics. The fabrics are arranged one behind the other forming an internal air space. The shield has horizontal movable and fixed rigid partitions of light or transparent material. The partitions fasten the fabrics and divide the air space into several parts within the height of the window opening. Both fabrics are corrugated and have corrugations with a height of not less than half the width of the partition with the folds in. EFFECT: enhanced efficiency. 1 dwg