Acoustic method for locating concealed pipe

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5127267
SERIAL NO

07643572

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ATTORNEY / AGENT: (SPONSORED)

Importance

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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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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SOUTHERN CALIFORNIA GAS COMPANYLOS ANGELES, CA2

International Classification(s)

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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 10 348

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (4)
* 4372151 Automatic fault locating apparatus for a pressurized pipeline 5 1980
* 4457163 Method and apparatus for locating pipeline damage 22 1982
* 4911012 Sewer line detection system 18 1988
* 5036497 Method and apparatus for detecting location of a subterranean pipe 8 1990
 
Leak Detective, Inc. (1)
* 4649948 Entry tap valve for pressurized pipe leak detector 25 1984
 
BABCOCK & WILCOX POWER GENERATION GROUP, INC. (1)
* 4858462 Acoustic emission leak source location 54 1989
 
GAS RESEARCH INSTITUTE (1)
* 4600356 Underground pipeline and cable detector and process 70 1984
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
VISTA ENGINEERING TECHNOLOGIES, INC. (1)
* 6003376 Acoustic system for measuring the location and depth of underground pipe 28 1998
 
MIRANT INTELLECTUAL ASSET MANAGEMENT AND MARKETING, LLC (1)
* 6813949 Pipeline inspection system 13 2002
 
MAGAL SECURITY SYSTEMS LTD. (2)
* 7202797 System and a method for detecting, locating and discerning an approach towards a linear installation 11 2005
* 2005/0251,343 System and a method for detecting, locating and discerning an approach towards a linear installation 2 2005
 
WILLIAM REBER, L.L.C. (1)
* 5790476 Methods and systems for locating an underground sewer using a buoy 3 1997
 
COLUMBIA GAS OF OHIO, INC. (1)
* 5412989 Acoustic tracing of buried conduits 7 1992
 
GAS TECHNOLOGY INSTITUTE (1)
* 6614354 In-ground pipeline monitoring 5 2001
 
TOHOKU TECHNO ARCH CO., LTD. (1)
* 6694815 Liquefaction phenomenon prediction system 1 2003
 
ENI S.P.A. (2)
* 8381593 Method for the remote detection, localization and monitoring of critical faults in pipelines 1 2009
* 2011/0114,412 METHOD FOR THE REMOTE DETECTION, LOCALIZATION AND MONITORING OF CRITICAL FAULTS IN PIPELINES 2 2009
 
New York State Electric & Gas Corporation (1)
* 5686828 Method for locating the joints and fracture points of underground jointed metallic pipes and cast-iron-gas-main-pipeline joint locator system 7 1995
 
WESTERN RESOURCES, INC. (1)
* 5457995 Horizontal boring pipe penetration detection system and method 20 1994
* Cited By Examiner