Abstract: An angle adjusting device for blind slats includes a base fixed in an upper elongate case, a winding shaft pivotally connected to the base and rotatable clockwise or counterclockwise by a controlling member, and a string wound on the winding shaft having two ends extending out of a first end of the base. Then, the two ends of the string are connected respectively with two hanging ropes of a support rope unit so that the angle-adjusting device may be handled for easily adjusting the angle of the blind slats.

Abstract: An equilibrium device for a blind without pull cords includes at least one movable weight-balancing member installed at a proper location in the interior of the lower rod of a blind. The weight-balancing member is provided for increasing and adjusting the weight of the blind so as to keep the weight of the blind and the elastic force produced by an elastic force mechanism in a force balanced condition after the blind is cut in width and lightened, enabling the blind to be collapsed upward and stretched downward normally.