WINDOW CURTAIN Russian patent published in 2019 - IPC E06B9/24 

FIELD: manufacturing technology.

SUBSTANCE: window curtain includes a coil and a roller, rotatably connected to the upper frame in two spaced positions, a coupling functionally connected to the roller and switched between the engaged position preventing the roller from rotating in the first direction, and disengaged state, providing roller rotation in opposite second direction, and a panel assembly including a plurality of transverse lamels respectively connected to the first and second panels. Coil is made with possibility of rotation for winding and unwinding of the panel assembly, at that the first panel remains in contact with the roller. Panel assembly is configured to switch between an open state for passage of light and a closed state, which blocks passage of light, by rotating the transverse lamels.

EFFECT: coil is made with possibility of rotation in direction of unwinding, when roller is fixedly fixed by coupling in engaged condition, to switch panel assembly from closed to open state.

21 cl, 22 dwg