Designed to open and close windows in difficult to attain areas, electric screen 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 driven by the engine, it starts to unfold. The arm is positioned in a manner that as it starts to unfold, the screen begins to open up. To close a screen, the arm starts to fold back again up into its original position, bringing the windowpane to a close.
It is simple in structure, easy to install, simply gently push the rack in the sliding door manage on the door frame, the door can be easily opened.
The opening mechanism for a rack and pinion functions by converting rotational movement into linear motion. The pinion is definitely a circular equipment, which engages a linear bar that has been fitted with teeth, referred to as the rack; power is usually put on 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 windows openers, the rack is housed in exterior casing and is attached to the windowpane. As the pinion techniques, the rack is definitely pushed out, starting the window along with it.
These are usually fitted to side hung home windows or doors, because they provide a 90-degree opening. They are also known as folding arm actuators and may be designed to open up inwards, outwards or both ways.
The object of today’s invention is achieved, through the center equipment shaft fixed on a frame, which is fixed to the frame, is fixed to the sliding equipment 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, so that the Automatic Window Opening System gear rack rotation from the gear rack fixed on the entranceway, the door movement, so that the entranceway is opened, with a equipment fixed to the frame reset spring.
The object of today’s invention is to supply a gadget with a special double rack door when the sliding door.