Patent ID: 7000670

Claim:
A blind comprising: a rectangular frame; comprising a front surface and a back surface and at least one side guiderail; a front window attached to the front surface of the frame; a back window attached to the back surface of the frame; a slat part comprising one or more slats and a bottom rail wherein the one or more slats and the bottom rail are operatively connected to the frame; an upper movable part comprising one or more drum parts and a helical gear part installed within the frame, wherein the helical gear part is coupled to a front tilting mechanism mounted externally on the frame for controlling a tilt angle of the slats; and a side movable part installed within the side guiderail for opening and closing the slat part, the side movable part comprising an up-down handle coupled to the side movable part and mounted externally on the frame for movement along a length of the side guiderail to raise or lower the slat part, wherein a total distance required to move the up-down handle to completely raise or lower the slat part is a fraction of the length of the side guiderail, wherein the up down handle need only be moved ⅕ the length of the side guide rail to completely raise or lower the blind.