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Continuous feedback container security system

  • US 6,870,476 B2
  • Filed: 04/07/2003
  • Issued: 03/22/2005
  • Est. Priority Date: 04/07/2003
  • Status: Active Grant
First Claim
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1. A security apparatus for use with a monitoring unit, the security apparatus comprising:

  • (a) a housing;

    (b) a mounting bracket attached to the outside of the housing, the mounting bracket configured for attachment to a secured item and comprising a switch, the switch configured to produce a first indication when the mounting bracket is attached to the secured item and a second indication when the mounting bracket is removed from the secured item;

    (c) a power source positioned inside the housing;

    (d) a transceiver positioned inside the housing and connected to the power source, the transceiver configured for communication with the monitoring unit; and

    , (e) an electronic circuit positioned inside the housing and connected to the power source, the transceiver and the switch of the mounting bracket, the electronic circuit programmed to enter an armed state when the first indication is produced by the switch, and programmed to cause the transceiver to periodically transmit an OK signal to the monitoring unit when in the armed state unless at least one of a plurality of alarm events occurs, the plurality of alarm events comprising;

    (i) production of the second indication by the switch of the mounting bracket;

    (ii) loss of power to the transceiver; and

    , (iii) loss of power to the electronic circuit.

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