Method of and apparatus for determining if a buried current...

Details Method of and apparatus for determining if a buried current... Method of and apparatus for determining if a buried current...

2006-06-20

2008-03-04

Patidar, Jay M (Department: 2862)

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

For small object detection or location

C324S067000

Reexamination Certificate

active

07339379

ABSTRACT:
A detector1for detecting a current carrying conductor has a pair of vertically spaced antennae3, 5to detect the magnetic radiation produced by a current carrying conductor as a result of one or both of the mains power supply or an electromagnetic signal which is induced in the conductor by a dedicated signal transmitter. The detector1continuously calculates the depth of a buried conductor and if the buried conductor is above a predetermined minimum depth then the detector1triggers an audio and/or visual alarm. By reducing the sensitivity of the antennae3, 5, the lateral offset range for which the alarm sounds is reduced and the location of a buried conductor can be determined.

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