Emergency release system for door lock

Details Emergency release system for door lock Emergency release system for door lock

E - Fixed Constructions

05

B

E05B 37/00 (2006.01) E05B 17/00 (2006.01) E05B 37/16 (2006.01) E05B 51/02 (2006.01) E05B 13/00 (2006.01) E05B 63/16 (2006.01)

Patent

CA 2415552

An emergency release system for door lock is disclosed, which includes a lock unit having handles and a lock, one of the handles being associated with the lock and the other not associated therewith, a latch unit having a latching bolt, wherein the lock, when set, prevents retraction of the latching bolt by rotation of the handle associated with the lock, but does not prevent the retraction by rotation of the other handle, a linking unit having latch retraction means and holding means, and a sensor door unit having sensor door means. The sensor door means is openable by means of a pressure difference across the door, and is connected to the holding means so that the holding means actuates the latch retraction means when the sensor door means is opened, for retracting the bolt independently from the lock unit.

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