A data cable has a specially formed stranded conductor, as a result of which the transmission properties of the data cable are significantly improved. The stranded conductor is surrounded by insulation and has an unpressed assembly composed of a plurality of individual wires which are of a same type and being embodied as external wires and being disposed around a center. The external wires are embodied with a non-round cross section, with a result that when viewed in cross section an extent of the external wires increases radially outward from the center.

The present disclosure relates to a tensile conducting monofilament and a conducting wire and a manufacturing method thereof. The tensile conducting monofilament is composed of a conducting filament and at least one tensile thread. The conducting filament is a flat conducting filament. The flat conducting filament is wound on the tensile thread. The conducting wire includes a circular conducting monofilament, at least one tensile conducting monofilament, and an insulation cover. The tensile conducting monofilament and the circular conducting monofilament are wrapped in the insulation cover. The method to manufacture a tensile conducting monofilament includes the steps of flattening a circular conducting monofilament to a flat conducting filament; and winding the flat conducting filament on at least one tensile thread. The method to manufacture a conducting wire includes the steps of stranding the tensile conducting monofilament and a circular conducting monofilament to be disposed in an insulation cover.

A multi-core cable includes a plurality of coaxial wires, each coaxial wire including a center conductor whose sectional area is 0.0005 mm.sup.2 to 0.0039 mm.sup.2. The multi-core cable includes a resin tape wrapped around the coaxial wires so that all of the plurality of coaxial wires are included therein, a shield layer being made of metal and covering the resin tape, and a sheath covering the shield layer and arranged at an outermost layer of the multi-core cable. The sheath is made of thermoplastic vulcanizate or tetrafluoroethylene-propylene-based fluorine containing rubber.

The invention relates to an electrical cable for supplying aircraft and similar devices with alternating current having at least partially higher frequencies of preferably 400 Hz. The cable is provided with a central neutral and/or return conductor (1) and at least six phase conductors (2a, 2b, 3a, 3b, 4a, 4b) arranged in a concentrically distributed manner about same, wherein every phase is distributed on two symmetrically opposing phase conductors (2a, 2b, 3a, 3b or 4a, 4b). The neutral and/or return conductor (1) is formed, in a very space-saving manner and with low inductivity, by preferably six individually insulated compact neutral wires (16), the total cross-section of which approximately corresponds to the cross-section of an individual solid neutral wire. In this way, with six-fold redundancy, the risk of a neutral wire failure is reduced, without diminishing the electrical properties with the inductive voltage drop.

Provided is a method of manufacturing an electric wire with terminal formed by connecting a first core exposed portion of an electric wire to a metal terminal having a box portion that is formed by processing a single conductive board into a box shape and has an opening in which a counterpart terminal is inserted, and a spring inside the box portion. After laser-welding opposed portions where parts of the single conductive board forming the box portion are opposed to each other, applying ultrasonic vibration to a second core exposed portion of the electric wire is executed.

An electrical conductor comprising a first layer, wherein the first layer is electrically conducting, and comprises micro protrusions, macro protrusions, wherein the micro protrusions are arranged on the macro protrusions, a first set of depressions, wherein the first set of depressions comprises at least two longitudinal depressions; the macro protrusions and the at least two longitudinal depressions are arranged in an alternating pattern, at least one coating layer, wherein the at least one coating layer comprises an electrically conducting polymer, touches the first layer, at least partially covers the first layer; wherein at least 50% of the macro protrusions have a width, measured along a first direction in the range of 2.0 mm to 40.0 mm and at least 50% of the micro protrusions have a width, measured along the first direction, in the range of 0.001 mm to 1.000 mm.

A signal line installation structure of an elongated member includes a signal line that is installed between an inner circumferential surface of an outer skin tube and outer circumferential portions of a rigid portion and a flexible portion, where the signal line is installed according to an installation structure according to which the signal line includes a spiral portion that is helically wound around the rigid portion and the flexible portion with an electrical connection portion on the outer circumference of the rigid portion as a winding start point. The spiral portion may prevent disconnection by reducing the bending stress of tension and compression that is applied to the signal line itself when the flexible portion is bent.

An insulated electric conductor having a copper core, a layer of aluminum formed on the copper core, and a second layer of aluminum in the form of high-purity aluminum is disclosed. The copper core may be a solid core or may be formed from a plurality of copper strands. The layer of aluminum formed over the copper core is at least partially anodized to form an aluminum oxide dielectric layer. The layer of high-purity aluminum may be formed by evaporation deposition, sputter deposition, or co-extrusion. Once the layer of high-purity aluminum is formed, it is anodized. More than two layers of aluminum may be formed over the copper core.

A stranded conductor (2) including a specific number of a first type of wire (5) which, in cross-section of the stranded conductor, are arranged in a hexagonal pattern around a central wire in at least two layers. The wires arranged at the vertices of the hexagonal pattern are of a second type of wire having in principle a smaller diameter than the first type of wires. The interstitial spaces (10) between the first and the second wires are filled by a sealing agent (3).

A core electric wire for a multicore cable that includes a conductor composed of a plurality of elemental wires twisted together and an insulating layer coating a circumference of the conductor, the insulating layer including a first component and a second component, the first component being high density polyethylene, the second component being at least one selected from the group consisting of a copolymer of ethylene and an α-olefin having a carbonyl group, and very-low density polyethylene, the first component having a content ratio of 10% by mass or more and 60% by mass or less to a total content of the polyethylene-based resin, the second component having a content ratio of 20% by mass or more and 80% by mass or less to the total content of the polyethylene-based resin.