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US 6,564,600 B1Granted
Electronic access control device
AssigneeVidex, Inc.
InventorPaul R. Davis
Life of this patent
Estimating the term…
Abstract
An electronic access control device has a movable locking member. A locking mechanism is operable to control the locking member. A movement detector generates a first condition in response to movement of the locking member. A key detector generates a second condition in response to detecting a key. The locking mechanism increases resistance to movement of the locking member in response to the first condition, and decreases resistance to movement of the locking mechanism in response to the second condition.
Claims16
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.
4 more elements
An electronic access control device, comprising:
- (a) a movable locking member;
- (b) a locking mechanism operable to control said locking member;
- (c) a movement detector that generates a first condition in response to movement of said locking member;
- (d) a key detector that generates a second condition in response to detecting a key;
- and
- (e) said locking mechanism increasing resistance to movement of said locking member in response to said first condition, and said locking mechanism decreasing resistance to movement of said locking member in response to said second condition.
3 more elements
Dependencies are inferred from the claim text.