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Remotely operated diagnostic tube sampling device and method of sampling

  • US 5,408,883 A
  • Filed: 06/09/1992
  • Issued: 04/25/1995
  • Est. Priority Date: 06/09/1992
  • Status: Expired due to Term
First Claim
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1. A remotely operated diagnostic tube sampling device, movable within a metal tube to be sampled, comprising:

  • (A) An emitter and a receiver of at least one of electromagnetic fields and ultrasonic waves, capable, when inserted in a metal tube to be sampled, of locating defects in the metal tube wall;

    (B) a cutting head capable of cutting a hole completely through said metal tube to provide a sample;

    (C) a retrieval assembly capable of engaging said sample portion and detaching it;

    (D) a probing means extendable from the device, and capable of passing through the hole to be cut in the tube to be sampled, and probing the environment around the device;

    (E) an instrumentation means to receive and interpret signals associated with the electromagnetic fields or ultrasonic waves; and

    (F) an associated driving mechanism capable of moving the sampling device within the tube length.

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