High security panic exit system

Abstract From the Canadian patent

A combined panic exit and combination lock assembly for a security area door including a panic exit device on the door inner side and a high security combination lock on the door outer side, wherein operation of a panic bar from within the security area concurrently retracts both the latch system of the panic exit device and the lock bolt of the combination lock for egress from the security area. However retraction of the panic exit latch system and of the lock bolt from outside the door requires independent unlocking operation of both the panic exit device and combination lock. A primary latch bolt of the exit device is retracted by a rod member and main control link and, secondary outputs …