Abstract: Disclosed are door assemblies particularly well suited for opening and closing wide entries such as emergency room entries. The assemblies have multiple doors that can be overlapped at a side of the entry. If further access room is needed the doors can then be pivoted so that essentially the entire entry is open. There is an automatic latching system that activates as the doors are being pivoted to prevent some sliding motion during the pivoting.

Abstract: An spring apparatus for use with an automatic swinging door closure system wherein the system includes a motor linked to a door via a gear train and a drive arm, the train including a plurality of gears including a first gear adjacent the motor, the motor driving the gears to move the door in either a clockwise or counter-clockwise direction and the apparatus for driving the gears in the direction opposite motor direction when motor power is cut off, the apparatus including a spring mounted within a housing which is linkable to the first gear in a first orientation to cause clockwise door movement and is linkable to the first gear in a second orientation to cause counter-clockwise door movement, the apparatus is easily modifiable so as to be configured in either of the first or second orientations and also includes a tension adjusting mechanism for adjusting spring tension.