A coaxial cable 10 includes a hollow-core-body 1 having an integral structure of thermoplastic resin including an inner annular portion 2 that insulation-coats an inner conductor 12, a plurality of rib portions 3 that radially extend from the inner annular portion 2, and an outer annular portion 4 that is connected to outer ends of the rib portions 3; three or more gap portions 5 surrounded by the inner annular portion 2, the rib portions 3, and the outer annular portion 4; and outer side reinforcing portions 7 being formed on both sides of an outer end in the rib portion 3, in which a size ratio of a minimum value W1 of a rib width in the rib portion 3 and a maximum value W2 of the rib width in the rib portion 3 is within a range of 1:1.6 to 1:3.0.

An electric cable for supplying power to aircrafts, rail vehicles, motor vehicles, ships or other devices is a single or multi-conductor cable and includes one or more current conductors with at least one insulation. A single or multi-layer outer casing is distributed over the periphery and is associated with the outwardly protruding reinforcing elements. The reinforcing elements are in the form of cooling ribs protruding preferably over the entire periphery of the cable and enable the surface of the cable to be increased and as a result, improve heat dissipation. The projecting reinforcing elements considerably reduce the risk of burning when the current conductors heat up and also protect the cable against abrasion. The invention also relates to a plug for the electric cable.

A conductor arrangement for an electrical connection includes a flexible multi-core internal conductor, an electromagnetic shield surrounding the flexible multi-core internal conductor, a thermoplastic hard plastic sheath surrounding a first portion of the flexible multi-core internal conductor, and a flexible corrugated tube surrounding a second portion the flexible multi-core internal conductor. A first portion of the thermoplastic hard plastic sheath includes an elongated flattened shape. A second portion of the thermoplastic hard plastic sheath includes an essentially round shape. The second portion of the thermoplastic hard plastic sheath is adjacent the first portion of the thermoplastic hard plastic sheath.

A conductor arrangement for an electrical connection includes a flexible multi-core internal conductor, an electromagnetic shield surrounding the flexible multi-core internal conductor, a thermoplastic hard plastic sheath surrounding a first portion of the flexible multi-core internal conductor, and a flexible corrugated tube surrounding a second portion the flexible multi-core internal conductor. A first portion of the thermoplastic hard plastic sheath includes an elongated flattened shape. A second portion of the thermoplastic hard plastic sheath includes an essentially round shape. The second portion of the thermoplastic hard plastic sheath is adjacent the first portion of the thermoplastic hard plastic sheath.

Disclosed is an armored cable assembly including a core having a notched assembly tape about a plurality of conductors. A metal sheath surrounds the core.

Disclosed is an armored cable assembly including a core having a notched assembly tape about a plurality of conductors. A metal sheath surrounds the core.

A data cable device includes USB connectors respectively formed at opposing ends of the data cable device; at least one data line having ends electrically connected to the respective USB connectors; a protection circuit module having a printed circuit board at which an external terminal is formed; a cable battery including an external input/output terminal electrically connected to an internal terminal of the printed circuit board, an inner electrode layer having a cylindrical shape formed at an inner center of the cable battery, a separator layer formed at an outer side of the inner electrode layer, an outer electrode layer formed at an outer side of the separator layer, and an inner insulation coating layer surrounding an outer surface of the outer electrode layer; and an outer insulation coating layer formed to surround at least a portion of an outer surface of the cable battery.

The invention concerns a power cable suitable for providing power to and from a downhole tool situated within a borehole. The cable comprises at least one inner conductor comprising at least one first electrically conductive material, at least one inner insulating layer surrounding the inner conductor(s), comprising at least one electrically insulating material, an armour sheath surrounding the inner insulating layer(s) comprising at least one second electrically conductive material and at least one outer conducting layer surrounding, and electrically contacting, the armour sheath, comprising at least one third electrically conductive material. The armour sheath further comprises at least one inner radial layer comprising a plurality of armouring wires with a diameter D and at least one outer radial layer electrically contacting the inner radial layer(s), the outer radial layer(s) comprising a plurality of armouring wires (6c) with a diameter d the diameter d being dissimilar to the diameter D, and wherein said armouring wires are radially arranged, in a closed packed structure in order to maximize the armour sheath density.

In one embodiment, a cable includes a data transmission path disposed about an axial center of the cable and a power transmission path sheathing the data transmission path. The power transmission path includes a power layer and a ground layer, where the power transmission path is characterized by a distributed impedance having at least one frequency dependent impedance characteristic. In some implementations, ground layer shields the data transmission path from electromagnetic interference. In some implementations, the frequency dependent impedance characteristic of the power transmission path is characterized by a capacitance value that satisfies a capacitance criterion at frequencies above a first frequency level. In some implementations, the frequency dependent impedance characteristic of the power transmission path is characterized by an inductance value that satisfies a first inductance criterion at frequencies above a first frequency level.

Induction heating extension cables including control conductors are disclosed. An example cable assembly includes: a first plurality of conductors in a Litz cable arrangement; an outer protective layer configured to protect the plurality of conductors from physical damage; and a second plurality of conductors that are electrically isolated from the first plurality of conductors and are protected by the outer protective layer from physical damage.