Electronic lock for hotel room safes and the like

Locks – Operating mechanism – Using a powered device

Patent

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Details

70214, E05B 4900

Patent

active

048874450

ABSTRACT:
An electronic lock controlled safe for hotel rooms and the like including a box-like safe having a safe door and door frame, an electronic lock mounted on the door including a forwardly exposed keypad and display window assembly, the keypad having plural finger-actuated keys with associated numerals and legends and an associated electrically activated alpha-numeric display strip located adjacent the keypad for displaying messages through the display window to an operator. The lock mechanism on the door includes a bolt movable between projected and retracted positions respectively for locking and unlocking the door, an electric motor and drive wheel mechanism driven thereby including a slip clutch, a movable link member coupled to the slip clutch and the bolt, photoelectric light sensors positioned adjacent the link providing sensor beam paths selectively intercepted by portions of the link for sensing predetermined positions of the link, and micro-processor circuitry responsive to signals from the keypad keys and the sensor signals for activating the display strip to display predetermined messages and for activating the electric motor to move the bolt to projected and retracted positions.

REFERENCES:
patent: 3878511 (1975-04-01), Wagner
patent: 3881171 (1975-04-01), Moorma
patent: 3953769 (1976-04-01), Sopko
patent: 4148092 (1979-04-01), Martin
patent: 4670747 (1987-06-01), Borras
patent: 4684945 (1987-08-01), Sanderford
patent: 4831370 (1989-05-01), Smoot

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