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Fenceless animal control system using GPS location information

  • US 5,868,100 A
  • Filed: 06/30/1997
  • Issued: 02/09/1999
  • Est. Priority Date: 07/08/1996
  • Status: Expired due to Term
First Claim
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1. An apparatus for controlling the location of an animal comprising:

  • a portable unit having means for attaching to the animal, said portable unit includingGPS means for receiving GPS signals and responsive thereto for providing location information representative of the location of said unit and thereby the animal, andstimulation means activatable for applying stimulation to the animal,said apparatus further including activation means including means for receiving said location information and responsive thereto for determining whether said location is outside a defined area and if so, for activating said stimulation means in order to encourage the animal to return to said area thereby controlling the location of the animal.

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