초록 ▼

An automatic mat-activated operating system for swinging doors provides approach circuitry for opening the doors when an approach mat at the entrance side of the doorway is activated and override safety circuitry for stopping door opening movement and returning the doors to a closed position when a

An automatic mat-activated operating system for swinging doors provides approach circuitry for opening the doors when an approach mat at the entrance side of the doorway is activated and override safety circuitry for stopping door opening movement and returning the doors to a closed position when a safety mat at the exit side of the doorway is activated within a predetermined initial range of door movement but not thereafter and also for preventing door opening movement if the safety mat is already activated at the time of initial activation of the approach mat. The control system thus protects pedestrians at the exit side of the doorway from being struck by the doors during their initial opening movement which may not be readily recognizable and avoidable and also protects pedestrians entering the doorway from the entrance side from being struck by unexpected return movement of the doors.

대표청구항 ▼

In an automatic door operating system of the type comprising a doorway having an entrance side and an exit side, a door, means supporting said door in said doorway for swinging movement between a closed position separating said entrance and exit sides and an open position on said exit side, first me

In an automatic door operating system of the type comprising a doorway having an entrance side and an exit side, a door, means supporting said door in said doorway for swinging movement between a closed position separating said entrance and exit sides and an open position on said exit side, first means for sensing an object at said entrance side of said doorway, second means for sensing an object at said exit side of said doorway, and means for actuating said swinging movement of said door, the improvement comprising control means operatively associated with each said first and second sensing means and with said actuating means for controlling operation of said actuating means in relation to said first and second sensing means, said control means including primary operating means for causing said actuating means automatically to swing said door in an opening direction from said closed position to said open position and then automatically to return said door in a closing direction from said said open position to said close position when said first sensing means senses an object at said entrance side of said doorway and override means for causing said actuating means automatically to stop said swinging movement of said door in said opening direction and then automatically to return said door in said closing direction to said closed position when said second sensing means senses an object at said exit side of said doorway while said door is within a predetermined initial range of said swinging movement in said opening direction and for preventing said swinging movement of said door in said opening direction from said closed position while said second sensing means senses an object at said exit side of said doorway.