Abstract: A window regulator for operating a window pane includes an attachment channel configured for attachment to the window pane, a regulator base plate, a pair of sector gears, and a drive motor. Each sector gear includes a plurality of external gear teeth, and a lift arm slidingly coupled to the attachment channel. The sector gears are rotatably coupled to the base plate and are disposed such that the gear teeth of one of the sector gears directly engage the gear teeth of the other sector gears. The drive motor is in direct engagement with one of the sector gears. Consequently, rotation of the drive pinion of the drive motor causes the sector gears to rotate in opposing directions and the lift arms to either raise or lower the window pane.