Key settable, pick proof lock

Details Key settable, pick proof lock Key settable, pick proof lock

E - Fixed Constructions

05

B

70/55

E05B 25/00 (2006.01)

Patent

CA 1106634

ABSTRACT A lock comprises separate key plug, lock plug and memory storage of a key image inserted in the key plug and transfer of the stored image to the lock plug for testing of the image at a site removed from the key plug. The key image memory and transfer mechanism comprises multiple chips offering a flexibility for key changes by any inserted key when the key plug and lock plug are in "unlocked" position. The memory is changed to the new key image. Testing is accomplished after lost motion rotation of the key plug to preclude manipulation of lock pins in the lock plug during testing of the key image (i.e., torquing of the lock plug).

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