Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1995-01-04
1998-12-22
Swann, Glen
Communications: electrical
Condition responsive indicating system
Specific condition
119721, G08B 2100, A01K 1502
Patent
active
058524037
ABSTRACT:
A pet containment system which comprises a transmitter for transmitting a series of electromagnetic signals, and a receiver removably attached to the pet for receiving the series of electromagnetic signals from the transmitter. The transmitter includes means for generating the electromagnetic signals, means for transmitting the electromagnetic signals, and at least one transmitting antenna. The receiver includes at least one receiving antenna, means for comparing the phase of the received electromagnetic signals from the transmitter with a predetermined phase and for producing an electronic indication of a loss of phase, and means for producing a control stimulus to the pet. The present invention also provides a method for producing an area for the containment of a pet.
REFERENCES:
patent: 3478344 (1969-11-01), Schwitzgebel
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patent: 4898120 (1990-02-01), Brose
patent: 4999613 (1991-03-01), Williamson et al.
patent: 5067441 (1991-11-01), Weinstein
patent: 5121711 (1992-06-01), Aine
patent: 5381129 (1995-01-01), Boardman
Radio Systems Corporation
Swann Glen
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