News wire article from our research archive:

Texas Inventor Develops Electronic Fence

ALEXANDRIA, Va., Sept. 12 -- Joon S. Kim of Dallas has developed an electronic fence for guiding animals to return.

According to the U.S. Patent & Trademark Office: "An electronic fence system capable of guiding animals under training to return to a predetermined restricted area. The electronic fence generates electric shocks as the animals attempt to leave the predetermined restricted area and restrains the electrical shock when the animals return to the predetermined restricted area. The electronic fence includes a transmitter and a receiver. The transmitter transmits RF signals having a plurality of control signals such that different shock levels are generated responsive to the ...

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