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Cable failure detection system

  • US 4,538,107 A
  • Filed: 01/10/1983
  • Issued: 08/27/1985
  • Est. Priority Date: 01/10/1983
  • Status: Expired due to Term
First Claim
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1. Apparatus to detect a flaw in a moving cable that can be magnetized, comprising:

  • (a) first and second magnets each having a north pole and a south pole spatially separated and adjacent said cable to magnetize the moving cable;

    (b) a magnetic sensing device adjacent said cable located between said magnets independent of and not coupled to either of said magnets wherein the moving cable in either direction after being magnetized by one of said magnets is passed through the magnetic sensing area of said magnetic sensing device, said magnetic sensing device sensing any change in the magnetic field of the magnetized cable, said change in the magnetic field resulting from any flow in said magnetized cable; and

    (c) means to convert the output of the magnetic sensing device to useable form so that the flaw of the magnetic cable becomes known.

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