Patent ID: 6111516
Filing Date: 2000-08-29
Classification: E05B

Abstract:
A method for setting a lock to identify a key for unlocking a door comprising the steps of:installing a first plurality of disks, which are penetrable by light ray, and a second plurality of disks, which are non-penetrable by said light ray, to a plurality of through-holes in said key for setting a disk arrangement for said key, said key cooperating with a lock having a plurality of trasmitters and a plurality of receivers respectively corresponding to said r transmitters in a key hole of said lock for transmitting and receiving said light ray through said disk;enabling said lock to detect and store said disk arrangement of said key, by setting a switch button on a control panel to a SET/RESET state and pressing a reset indication lamp on said panel thereby to light on a set indication lamp correspond to said reset indication lamp;pressing said set indication lamp;inserting said key into said lock and detecting said disk arrangement of said key by said transmitters and receivers and storing the detected disk arrangement in a memory device of said lock; andunlocking a door equipped with said lock by inserting said key into said keyhole of said lock and comparing said disk arrangement of said key with disk arrangements stored in said memory device of s aid lock.