Electricity: measuring and testing – Determining nonelectric properties by measuring electric...
Reexamination Certificate
2006-08-22
2006-08-22
Deb, Anjan (Department: 2858)
Electricity: measuring and testing
Determining nonelectric properties by measuring electric...
C324S718000
Reexamination Certificate
active
07095222
ABSTRACT:
A method for locating leaks in nonmetallic pipes on the principal of measuring and graphing the intensity of electric fields. Leaks are located by creating a closed circuit with a negatively charged metallic electrode submersed in water inside a manhole connected to the nonmetallic pipe and several positively charged metallic electrodes placed in several reference holes in the ground above the nonmetallic pipe. A leak is determined by finding segments of nonmetallic pipe that corresponds with greater electric field intensity measurements.
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Deb Anjan
Geo Estratos, S.A. de C.V.
Gunn & Lee , P.C.
Nguyen Hoai-An D.
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