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US 4,809,492 AGranted
Torsionally balanced wire rope or cable
AssigneeVereinigte Drahtseilwerke GmbH
InventorHelmuth Fischer
Life of this patent
Estimating the term…
Abstract
The twistless and/or weakly twisted wire rope or cable with the many strand many layer structure comprises a core rope and a cover layer stranded on the core rope in an opposite stranding direction. The core rope is made exclusively from substantially circular strands and the cover layer is made exclusively from only one layer of substantially flat strands.
Claims8
A torsionally balanced wire rope, comprising:
- a circular cross section core cord of parallel strands having a twist in one sense, each of said strands being of a circular cross section and comprising a multiplicity of circular-section parallel wires having a twist in said one sense, the strands along a periphery of said core cord being laterally contiguous around the periphery;
- and
- a cover layer consisting exclusively of a single layer of mutually parallel substantially flat strands around and on said periphery of said core cord and having a twist in the opposite sense and arranged to torsionally balance the twist of said core cord.
Dependencies are inferred from the claim text.