Electronic combination lock with high security features

• Main Authors: HARVEY MICHAEL P, MILLER J. C
• Format: Patent
• Language: English
• Published: 22.12.2005
• Edition: 7
• Subjects: ACCESSORIES THEREFOR; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE; CHECKING-DEVICES; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FIXED CONSTRUCTIONS; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATING RANDOM NUMBERS; HANDCUFFS; KEYS; LOCKS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGISTERING OR INDICATING THE WORKING OF MACHINES; REGULATING; SAFES; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TIME OR ATTENDANCE REGISTERS; VOTING OR LOTTERY APPARATUS; WINDOW OR DOOR FITTINGS

A self-powered electronic combination lock including a lock mechanism having locked and unlocked conditions. A rotatable dial is used to input a numerical combination code for changing the lock mechanism from the locked condition to the unlocked condition. An electronic display operates to display individual numbers of the combination code as the dial is rotated and a control is electrically connected with the dial and the electronic display. The control changes the numbers shown in the display as the dial is rotated in a single direction and the control is operable to sense a change in the direction of dial rotation. An electricity generating device is connected with the dial and the control and operates through dial rotation to generate electricity to power the control.