Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Electronic combination lock with high security features










Image Number 19 for United States Patent #5973624.

An electronic combination lock includes a combination lock having a dial with no markings thereon. Rotation of the dial drives a generator which produces electrical pulses. The voltage pulses serves as a power source for the electronics of the lock. The lock also includes a security feature to disable the lock if the combination dial is stopped between dial rotations for a period of time which indicates dialing by an automatic dialer.








 
 
  Recently Added Patents
Location-type tagging using collected traveler data
Quick mounting device
Subcarrier cluster-based power control in wireless communications
Systems and methods for dynamically modifying subcriber service profile stored in home location register while roaming in wireless telecommunication networks
Vehicle location information-based abnormal driving determination and warning system
Automatic stop and restart device for an engine
Method of manufacturing semiconductor device and semiconductor device
  Randomly Featured Patents
Process for the preparation of palladium (I) tri-tert-butylphosphine bromide dimer
Alignment technique for a photographic enlarger
Envelope flap opener
Programmable variable speed for sewing machine
Liquid distributor for material exchange columns
Method for controlling a quantity of ink in a printing machine
Method and apparatus for cleaning phonograph records
Housing for a computer
Resveratrol analogs
Method and system for providing voice communication over data networks