Cable lock system
First Claim
Patent Images
1. A cable alarm system comprising:
- a lock;
a cable coupled to said lock and operative to conduct a current;
a secondary wire coupled to said lock and to said cable and operative to conduct a current;
a current detector coupled to said cable and said secondary wire, operative to detect an interruption of a current in at least one of said cable and said secondary wire;
a battery operative to supply power to said current detector;
an alarm coupled to said current detector and receiving power from said battery; and
a heat sensor coupled to said cable and said secondary wire.
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Abstract
A cable alarm system is provided that includes: a lock; a cable coupled to the lock and operative to conduct a current; a secondary wire coupled to the lock and parallel to the cable and operative to conduct a current; a current detector coupled to the cable and the secondary wire, operative to detect an interruption of a current in at least one of the cable and the secondary wire; a battery operative to supply power to the current detector; an alarm coupled to the current detector and receiving power from the battery; and a heat sensor coupled to the cable and the secondary wire.
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Citations
13 Claims
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1. A cable alarm system comprising:
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a lock; a cable coupled to said lock and operative to conduct a current; a secondary wire coupled to said lock and to said cable and operative to conduct a current; a current detector coupled to said cable and said secondary wire, operative to detect an interruption of a current in at least one of said cable and said secondary wire; a battery operative to supply power to said current detector; an alarm coupled to said current detector and receiving power from said battery; and a heat sensor coupled to said cable and said secondary wire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A cable lock, comprising:
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a lock; a cable having a first end and a second end configured to be coupled to the lock to form a closed loop and adapted to conduct current; a secondary wire coupled to the lock and adapted to conduct current; a current detector coupled to the cable and the secondary wire and configured to detect an interruption in a current on at least one of the cable and the secondary wire; an alarm to transmit at least one of an infrared alarm signal or a radio frequency alarm signal coupled to the current detector; and a heat detector coupled to the alarm and to at least one of the cable and the lock. - View Dependent Claims (10, 11, 13)
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12. A cable lock, comprising:
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a lock; a cable having a first end and a second end configured to be coupled to the lock to form a closed loop and adapted to conduct current; a secondary wire coupled to the lock and adapted to conduct current; a current detector coupled to the cable and the secondary wire and configured to detect an interruption in a current on at least one of the cable and the secondary wire; an alarm to transmit at least one of an infrared alarm signal or a radio frequency alarm signal coupled to the current detector, wherein the current detector is adapted to provide a signal to the alarm when the interruption in the current is detected, and a heat detector coupled to the alarm and to at least one of the cable and the lock.
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Specification