Acoustic method for locating concealed pipe

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United States of America Patent

PATENT NO 5127267
SERIAL NO

07643572

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Abstract

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A method for determining the location of a concealed pipe is disclosed. An identifiable acoustic signal is injected into the concealed pipe. The signal propagates along the interior length of the pipe. The signal is detected by an array of detectors positioned at varying distances from the pipe. The detected signal generates voltage outputs from the detectors to a signal processor. The 'time-of-flight' of the acoustic signal from the point of generation to the point of detection is measured by the signal processor. The detector measuring the shortest 'time-of-flight' is closest to the concealed pipe.

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Patent Owner(s)

Patent OwnerAddress
SOUTHERN CALIFORNIA GAS COMPANY A CA CORPBOX 3249 TERMINAL ANNEX LOS ANGELES CA 90051

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Campbell, Bruce K Chicago, IL 3 27
Huebler, James E Brookfield, IL 10 361

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