Electronic access control device
DCFirst Claim
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1. 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.
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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.
112 Citations
16 Claims
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1. An electronic access control device, comprising:
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(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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electronic access control device, comprising:
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(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. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification