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US 4,803,888 AGranted
Resistance wire tension measuring gauge
OwnerPierre Choquetinventor
Life of this patent
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Abstract
An electrical resistance wire is mounted along a cable or a rod which can be subject to a tension load or strain. The wire is mounted so that it undergoes a variation of its resistance when there is a variation of the tension load in the cable or rod. The resistance in the resistance wire is measured on a periodic basis, which gives a measure of the tension load.
Claims9
An apparatus for measuring either tension load or strain in cables or rods comprising
- at least one resistance wire;
- said resistance wire being contained in a wrap around cover designed to protect said wire against aggressive agents;
- means for mounting said at least one resistance wire along said cable or rod so that said wire undergoes a variation of its electrical resistance when said cable or rod is subject to a variation of tension load or strain;
- and
- means to measure the variation in resistance in said wire so as to determine the tension load or strain of said cables or rods.
2 more elements
Dependencies are inferred from the claim text.