Patent ID: 6877547

Claim:
A device for a horizontal window blind of the type installed over the interior of common household windows which invention comprises the following elements: a) a set of control cords, 1) a raising open and lowering close control cord, 2) a tilt open and tilt close control cord, b) a window blind head rail, c) a window blind bottom board, d) a window blind raising and lowering mechanism, e) a window blind tilt open and tilt close mechanism, f) a set of cord hole free slats, 1) a single slat having absolutely no control cord holes, 2) a single slat curved upwards with means to minimize light leaks by keeping a top edge of the slat flush when in contact with the adjoining upper slat when in a tilt close up operation, and respectively, a bottom edge of the slat flush when in contact with the adjoining bottom slat when in a tilt close down operation, g) a clip, the clip having: 1) a first portion and a second portion, the first and second portions each having a first and second end, the first and second portion first ends being joined, the first and second portion second ends being detachably fastenable about one of the slats, the second portion second end further having a rear loop, the rear loop being sized to receive the set of control cords, such that the tilt control cord is tied to the rear loop and the raising and lowering control cord runs freely through the rear loop, 2) a front loop, the front loop being attached proximate the joinder of the first and second portion first ends, the front loop being shaped to receive the set of control cords such that, the tilt control cord is tied to the front loop and the raising and lowering control cord runs freely through the front loop, in which the clip is used as means to connect the cord hole free slats to the control cords and the control cords are connected at the top to the window blind head rail and at the bottom to the window blind bottom board and furthermore, the control cords are connected to a window blind raising and lowering mechanism and a window blind tilt open and tilt close mechanism.