Multiple layer wire strand
AssigneeGripple Limited
InventorHugh David Facey
Life of this patent
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Abstract
A wire strand (10) comprises a plurality of wires (12, 16, 20). The wires comprise a central king wire (12), a first layer (14) of wires (16) arranged around the king wire, and a second layer (18) of wires (20) arranged around the first layer. The king wire is formed of steel having a carbon content of at least 0.3 wt %. Each wire of the first layer is formed of steel having a carbon content which is less than the carbon content of the king wire. Each wire of the second layer is formed of steel having a carbon content which is greater than, or the same as, the carbon content of the wires of the first layer.
Claims20
A wire strand comprising a plurality of wires, the wires comprising:
- a central king wire formed of steel having a carbon content in the range of 0.3 wt % to 0.6 wt %;
- a first layer of wires arranged around the king wire, the first layer comprising a plurality of wires formed of steel having a carbon content in the range of 0.05 wt % to 0.2 wt %;
- and a second layer of wires arranged around the first layer, the second layer comprising a plurality of wires formed of steel having a carbon content in the range of 0.05 wt % to 0.2 wt %.
Dependencies are inferred from the claim text.