WINDOW SCREENING DEVICE Russian patent published in 1998 - IPC

FIELD: civil engineering. SUBSTANCE: window screening device, for instance, folding curtain or rising louvers, has screening member fastened between upper decorative case and sliding lower cross-member, and also guiding means in the form of cord system with guide cords which are passed through rows of holes in screening member, lower cross-member and side guide strip to one end of frame lower member and back to upper decorative case. In upper decorative case, each guide cord is connected with one end of tension spring, and spring other end is connected to fixed projection. Free ends of two cords on each side of upper decorative case are joined for sliding. Each tension spring is connected with stopping device in upper decorative case for limiting spring travel. EFFECT: improved convenience of control of window screening device. 4 cl, 2 dwg