Key operated electronic lock

Details Key operated electronic lock Key operated electronic lock

E - Fixed Constructions

05

B

70/3, 342/6.1

E05B 47/00 (2006.01) G07C 9/00 (2006.01)

Patent

CA 1254760

KEY OPERATED ELECTRONIC LOCK ABSTRACT OF DISCLOSURE A special type of key is made use of to actuate an electronically triggered release mechanism to unlock a door. To enable the electronic means to function, inser- tion of the key in the keyway initially closes a switch to energize the electronic cirucit. Also when the key reaches the switch closing position, a read head for the electro- nic circuity, located adjacent the keyway, interprets mag- netic coding carried by the key. The electronic circuit is programmed to motivate a motor driven mechanism to move a locking pin out of engagement with a latch bolt where the latch bolt has been acting to hold a door locked. Once the locking pin has been removed, the latch bolt is in fact withdrawn from its locked position by rotation of the key in a substantially normal fashion.

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