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Detector for calculating the depth of a buried conductor

  • US 8,125,210 B2
  • Filed: 03/02/2009
  • Issued: 02/28/2012
  • Est. Priority Date: 03/03/2008
  • Status: Active Grant
First Claim
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1. A detector for calculating a depth of a buried conductor, the detector comprising:

  • at least three antennas for detecting an electromagnetic field radiated by a buried conductor;

    means for calculating the depth of said conductor based on the field detected by the antennas; and

    means for displaying the calculated depth of said conductor,wherein the detector is configured such that the calculated depth is displayed on the means for displaying the calculated depth when one or more predetermined criteria are satisfied, and wherein the antennas are vertically spaced and include a top horizontal antenna, a bottom horizontal antenna and a middle horizontal antenna disposed between the top antenna and the bottom antenna at a separation s from each antenna, or, the antennas include a bottom vertical antenna, a bottom horizontal antenna, a first middle horizontal antenna and a second middle horizontal antenna oriented substantially orthogonally to the first middle horizontal antenna.

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