Abstract: The walls in the Unity Platform System are installed all along the platform to match the position of the train doors; on the other hand for different model trains, two new systems which are installed completely free from the train doors have been proposed in the file. The doors with roller bearings move on the seating sledge in the walls. All the doors are attached to one close circle rope, which moves over a pulley set. One drive group activates this rope. The drive group consists of one variable speed reversible motor; one brake and one drive sheave. The rope is pulled to the right or left by the drive sheave. All the doors open or close at the same time, being attached to the same rope. Besides, to bridge the gap between the platform edge and the train, three different Gap Devices have been proposed in the file.

Abstract: An end closure for a rail car which comprises a pair of sliding doors mounted for movement between open and closed positions. One of the doors has a recess to clear a brake lever when the door is open. A panel is provided to close the recess when the door is closed. The panel is automatically moved to a position opening the recess when the door is opened and automatically moved to a position closing the recess when the door is closed.