DEVICE TO FIX HORIZONTAL LOUVERS OPENED OVER PREDETERMINED LENGTH Russian patent published in 2007 - IPC E06B9/26 

FIELD: building, particularly screens or other constructions affording protection against light, especially against sunshine.

SUBSTANCE: device is adapted to retain horizontal louvers opened for predetermined length having U-shaped member and arranged between sashes of window or door provided with wings or located on inner surface of inner sash of door or window wing. The device comprises cord fixer, which is made as flat roll. The roll comprises ridge having groove extending for the full ridge perimeter. Flat fixer side is fastened to inner sash surface facing indoors. The device also has cord, which regulates length of louver opening and having the first end connected to louvers and another end having knot. The second cord end is placed in head made as hollow truncated cone. The device has flat stop with cut extending transversely to stop bar surface. Cut length is equal or more than half of diameter of head tip brought into contact with stop. Cut width is less than that of any cross-section of head tip and is enough to receive cord. The roll is connected to sash surface between cord outlet and stop so that cord passing through roller groove and inserted in stop cut provides predetermined length of louvers opening.

EFFECT: increased reliability of louvers fixation.

9 cl, 6 dwg