Device for identification of need to replace synthetic fiber...

Details Device for identification of need to replace synthetic fiber... Device for identification of need to replace synthetic fiber...

D - Textiles, Paper

07

B

D07B 1/14 (2006.01)

Patent

CA 2291582

To identify the need for replacement of stranded synthetic fiber ropes (1), preferably ropes of aramide fiber, a torsionally neutral rope construction of load-bearing fiber strands (2, 3, 4, 5) is obtained by having at least two layers of strands (7, 14) laid together in opposite directions so that the torsions in the layers of strands (7, 14) due to their lay compensate each other. If the layers of strands (7, 14) become weakened by unequal amounts due to wear or external influences, when the rope (1) is under load and running operationally it begins to twist about its longitudinal axis (20). The twisting of the rope (1) can be made visible by means of various measures. In one embodiment a mark (11) along the length of the rope indicates twisting of the rope and thereby serves to provide visual identification of the need for its replacement.

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