Rotating Evolution Door by Klemens Torggler

Published on February 10, 2014

Austrian company Klemens Torggler have recently invented the “Evolution Door,” a very cool new door that slides itself open/closed – without the use of tracks. A special system of rotating squares means the door just requires a gentle nudge to close, and then momentum takes care of the rest. Words can’t really explain the cool factor, so check out the video above and more below after the break!


Klemens Torggler’s door is an invention based on rotating squares, The special construction makes it possible to move the door sideways without the use of tracks. This technical trick opens up new applications for the door.


During the development of the doors several solutions were found for connecting the squares efficiently.


During the development of the flip panel doors several solutions were found for connecting the squares efficiently. One of these is a connection that employs a system of rods.

Second door has the same format as a traditional Central European double door. The door can be joined together as one unit, or have the left and right wings moving independently, as required.

Another alternative way to connect the squares is with a wheel and a curved track. A wheel is guided along the track when the door is moved.


The most recent system (Blue). Compared to all systems before, this system makes it possible to place the squares one upon the other in the final positions of the door.
A moving object that revolves around its own vertical axis. The screen can be turned and opened with one movement of the hand.

Klemens Torggler

Door, steel

Evolution Door with soft edges





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