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Method and apparatus for detecting elevator rope degradation using electrical resistance

  • US 7,123,030 B2
  • Filed: 08/12/2003
  • Issued: 10/17/2006
  • Est. Priority Date: 03/29/1999
  • Status: Expired due to Term
First Claim
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1. A method for detecting deterioration of the tension-load bearing capacity of an elevator rope that is fixed at termination points in an elevator assembly, the elevator rope comprising an electrically conductive, tension bearing component encased in a non-conductive jacket, the method comprising the steps of:

  • applying an electric current through the component substantially between the termination points of the elevator rope;

    determining electrical resistance of the component; and

    relating the determined resistance to the tension-load bearing capacity of the elevator rope.

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