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Tracking device

  • US 20020175820A1
  • Filed: 03/13/2002
  • Published: 11/28/2002
  • Est. Priority Date: 03/14/2001
  • Status: Active Grant
First Claim
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1. A monitoring and locating device comprising:

  • at least one portable child unit; and

    a parent unit in communication with the portable child unit, the parent unit being configured to assign an individual identifier to each portable child unit and configured to monitor each of the portable child units by transmitting and receiving signals to each of the portable child units based on the individual identifiers assigned thereto, the parent and child units being configured to provide directional information as to the position of the child unit with respect to the parent unit and a perimeter alarm when the child unit moves to a distance from the parent unit that is greater than a predetermined distance.

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