Patent ID: 7299852

Claim:
A vertical blind, comprising: a headrail; a fixing bracket secured on the headrail; a plurality of juxtaposed movable brackets movably mounted on the headrail and movable relative to each other wherein a first one of the movable brackets is movable relative to and limited by the fixing bracket; a drive bracket movably mounted on the headrail and movable to rest on a last one of the movable brackets so as to pull the movable brackets; a plurality of driven blocks mounted on the fixing bracket and the movable brackets; a plurality of drive blocks mounted on the movable brackets and the drive bracket and movable to rest on a respective driven block to drive the respective driven block; a plurality of mounting seats mounted on the fixing bracket and the movable brackets to attach the fixing bracket and the movable brackets to the headrail; a portion of the mounting seats being collinear about a horizontal axis; a plurality of shades mounted on the fixing bracket, the movable brackets and the drive bracket; a pull cord unit mounted on the drive bracket to attach the drive bracket to the headrail and to move the drive bracket; a positioning unit mounted on the fixing bracket; wherein each of the fixing bracket, the movable brackets and the drive bracket has a first side formed with a first mounting groove and a second side formed with a second mounting groove, each of the driven blocks is secured in the respective first mounting groove of each of the fixing bracket and the movable brackets, and each of the drive blocks is secured in the respective second mounting groove of each of the movable brackets and the drive bracket.