Designed to open and close windows in difficult to reach areas, electric home window Automatic Window Opening System gear rack openers, or actuators, are exceptionally handy.
They work via a motorised folding arm that’s attached to a screen. The arm starts in a folded position, however as it is run by the electric motor, it starts to unfold. The arm is positioned in a way that as it begins to unfold, the windows begins to open up. To close 
a home window, the arm starts to fold back up into its original position, bringing the window to a close.
It is simple in framework, easy to install, simply gently drive the rack in the sliding door manage on the entranceway frame, the door could be easily opened.
The opening mechanism for a rack and pinion works by converting rotational movement into linear motion. The pinion is a circular gear, which engages a linear bar that has been fitted with teeth, known as the rack; power can be applied to the pinion causing it to rotate, which subsequently makes the rack move in relation to the pinion, which converts the rotational motion of the pinion into linear movement. For electric window openers, the rack is definitely housed in exterior casing and is attached to the windows. As the pinion movements, the rack can be pushed out, starting the home window along with it.
These are usually suited to side hung home windows or doors, because they offer a 90-degree opening. Also, they are called folding arm actuators and may be designed to open inwards, outwards or both methods.
The object of the present invention is achieved, through the center equipment shaft fixed on a frame, which is fixed to the frame, is fixed to the sliding gear engages with the rack on the rail of the frame, fixed to the corresponding door there might be engaged with the stationary gear rack, the slide rack when the pushing handle on the entranceway, to ensure that the rotation from the gear rack fixed on the entranceway, the entranceway movement, so that the entranceway is opened, with a gear fixed to the frame reset spring.
The object of the present invention is to provide a device with a special double rack door when the sliding door.