High security panic exit system

E - Fixed Constructions – 05 – B

Patent

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Details

292/2, 16/20, 70

E05B 65/10 (2006.01) E05B 47/06 (2006.01)

Patent

CA 2024262

ABSTRACT OF THE DISCLOSURE 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 and associated secondary latch bolts are connected to bellcranks. One of the secondary outputs is connected to the combination lock bolt mechanism and its associated bellcrank is coupled by a lost motion linking system to the rod member so that retracting movement is imparted to the coupling link from the rod member without relative motion between them to achieve concurrent retracting movement of the latch bolts and lock bolt and relative lost motion movement of the coupling link with respect to the rod member is accommodated upon independent retraction of the lock bolt or the primary latch bolt from outside the door.

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