Composite cable
AssigneeNexans
InventorsHarald Büthe, Harald Heymanns, Gerd Verdenhalven
Life of this patent
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Abstract
A composite cable to be laid by being drawn or blown into a cable tube, which has at least two insulated copper wires (1, 2) which are stranded with one another, and at least one single-fiber optical waveguide (3, 4) and a cable sheath (5). The insulation of the copper wires has an inner layer (1b, 2b) with foamed polymer and an outer layer (1c, 2c) including an unfoamed polymer (foam skin). The optical waveguide(s) (3, 4) being arranged in the stranding gaps in the insulated copper wires (1, 2) which are stranded with one another, and reinforcing elements (5a) are made from a material having a high tensile strength being embedded in the sheath (5).
Claims8
A composite cable to be laid by being drawn or blown into a cable tube, comprising:
- at least two insulated copper wires stranded with one another,
- at least one single-fiber optical waveguide, and
- a cable sheath,
- wherein said insulation of said copper wires includes a foamed polymer inner layer and an unfoamed polymer outer layer, and
- said at least one single-fiber optical waveguide is arranged in the stranding gaps of said insulated copper wires which are stranded with one another,
- wherein the wires and said at least one waveguide are surrounded by a first layer of non-hygroscopic foils, at least one layer of an aluminum foil arranged on said first layer of non-hygroscopic foils, and a second layer of non-hygroscopic foils lying on said layer of said aluminum foil, and
- reinforcing elements made from a material having a high tensile strength embedded in the sheath, wherein said layers are surrounded by the sheath.
Dependencies are inferred from the claim text.