LOCATABLE OBJECT SUITABLE FOR UNDERGROUND USE AND METHODS OF LOCATING SAME

LOCATABLE OBJECT SUITABLE FOR UNDERGROUND USE AND METHODS OF LOCATING SAME

An all-dielectric cable (20) which is destined to be buried is provided with at least one electronically resonant marker (44). After the cable is buried, a tradesperson may locate the cable by causing an electromagnetic signal (71), which comprises at least one frequency, to be transmitted by a tran...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DAVIS, DONALD D, SCHEPIS, ALBERT J, TURNER, LOYCE A, PESTO, WILLIAM STEVE
Format: Patent
Sprache:eng
Schlagworte:
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:An all-dielectric cable (20) which is destined to be buried is provided with at least one electronically resonant marker (44). After the cable is buried, a tradesperson may locate the cable by causing an electromagnetic signal (71), which comprises at least one frequency, to be transmitted by a transceiver (60) and to he induced into the electronically resonant marker associated with the cable. A return signal (73), which is radiated by the electronically resonant marker and which is at a frequency different from the at least one frequency, is received by the transceiver. Characteristics of the return signal provide useful information for the determination of the location of the buried cable.