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Cable lock system

  • US 7,253,733 B2
  • Filed: 04/05/2005
  • Issued: 08/07/2007
  • Est. Priority Date: 12/18/2002
  • Status: Expired due to Fees
First Claim
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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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