Patent ID: 6564600
Filing Date: 2003-05-20
Classification: E05B,G07C,Y10T

Abstract:
An electronic access control device, comprising:(a) a movable locking member; (b) a latch member movable between an open position and a locked position, said latch member in said locked position interfering with movement of said locking member; (c) an electrical unit operable to control said latch member and connected to a power supply; (d) a movement detector that generates a first signal in response to movement of said locking member; (e) a key detector that generates a second signal in response to detecting a key; and (f) said power supply directing current in said electrical unit in one direction to increase resistance to movement of said locking member in response to said first signal, and said power supply directing current in said electrical unit in an opposite direction to decrease resistance to movement of said locking member in response to said second signal.