Pipe material discrimination
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United States of America Patent
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-
N/A
Issued Date -
Sep 30, 2004
app pub date -
May 25, 2004
filing date -
Jun 1, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method for determining the material from which an underground pipe is made. The method exposes a portion of the pipe, applies a coil having a primary winding and a secondary winding to the exposed portion of pipe such that the pipe contributes to an inductive coupling between the primary winding and the secondary winding, applies an excitation current to the primary winding to induce in the secondary winding a signal indicative of an induction value of the pipe, and determines the material from which the pipe is made dependent upon the signal induced in the secondary winding.
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