A guarded coaxial cable assembly includes a micro-coaxial cable and a metal rail for protecting the micro-coaxial cable from harmful compression.

A fire-retardant data communication cable assembly including an outer coaxial jacket made out of fire-retardant material (e.g., Flourinated Ethylene Propylene (FEP)) coaxially enclosing optical and wire communication mediums, metal (e.g., copper) braid, metal (e.g., aluminum) foil, drain wire, and aramid fibers for substantially the entire length of the cable; a tube made out of fire-retardant material (e.g., Ethylene Tetrafluoroethylene (ETFE) or polyolefin) coaxially enclosing one or more optical communication mediums (e.g., optical fibers) and one or more aramid fibers for substantially the entire length of the cable; a fire-retardant coating (e.g., FEP) coaxially disposed over each of the one or more wire mediums for substantially the entire length of the cable.

A cable structure includes at least one stuffing element, a first transmission module surrounding outside the at least one stuffing element, a first shielding layer surrounding outside the first transmission module, a second transmission module surrounding outside the first shielding layer, a second shielding layer surrounding outside the second transmission module, a woven layer surrounding outside the second shielding layer, an insulating skin surrounding outside the woven layer, a plurality of first core wire assemblies disposed in the first transmission module and the second transmission module, respectively, and at least one second core wire assembly disposed in the first transmission module or the second transmission module. A diameter of each first core wire assembly is different from a diameter of each second core wire assembly.

A wireline system includes a control system, a downhole tool, and a wireline cable coupling the downhole tool and the control system. The wireline cable includes a plurality of conductors, which includes a core conductor and a concentric conductor disposed around the core conductor, wherein two of the plurality of conductors form a conductor pair, and wherein each of the plurality of conductors is configured to transmit power, data, or both, between the control system and the downhole tool. The wireline cable further includes one or more insulative layers, wherein at least one insulative layer is disposed between any two conductors.

A cable is provided for detecting tampering thereof. The cable has at least one copper signal cable, a binder, an inner jacket, an armor, and at least one optical fiber sensor element, disposed within the cable. The at least one optical fiber sensor element is configured attenuate under stress to the cable, sufficient to detect a breach or tapping of the copper signal cable therein.

An electrical cable includes a conductor assembly having a first conductor, a second conductor and an insulator surrounding the first conductor and the second conductor. The insulator has an outer surface. The conductor assembly extends along a longitudinal axis for a length of the electrical cable. The first conductor has a first core and a first conductive layer on the first core. The second conductor has a second core and a second conductive layer on the second core. The first and second cores are dielectric. The electrical cable includes a cable shield around the conductor assembly engaging the outer surface of the insulator and providing electrical shielding for the first and second conductors. The cable shield extends along the longitudinal axis.

A composite cable is composed of a power supply wire, which includes a twisted wire pair aggregate, which are being formed by laying a plurality of twisted wire pairs together, a plurality of coaxial wires, and a plurality of signal wires, which are each smaller in outer diameter than the power supply wire and the plurality of coaxial wires. The plurality of coaxial wires and the plurality of signal wires are being laid helically over an outer periphery of the power supply wire, and each of the plurality of coaxial wires is being arranged in contact with an outer periphery of the power supply wire, and is being arranged at equally spaced intervals in a circumferential direction of the power supply wire, while each of the plurality of signal wires is being arranged in such a manner as to remain separate from the power supply wire.

The present invention relates to a high speed transmission cable that includes a first conductor set, a dielectric film at least partially concentrically disposed around the first conductor set and a pinched portion forming an insulating envelope around the first conductor set. The dielectric film includes a base layer having a plurality of first protrusions formed on a first major surface of the base layer, wherein the dielectric film is disposed such that the base layer is partially concentric with the conductor set and wherein a portion of the first protrusions is disposed between the first conductor set and the base layer in a region where the base layer is concentric with the first conductor set.

A shielded electrical ribbon cable includes adjacent first and second longitudinal conductor sets where each conductor set includes two or more insulated conductors. The first conductor set also includes a ground conductor that generally lies in the plane of the insulated conductors of the first conductor set. At least 90% of the periphery of each conductor set is encompassed by a shielding film. First and second non-conductive polymeric films are disposed on opposite sides of the cable and form cover portions substantially surrounding each conductor set, and pinched portions on each side of each conductor set. When the cable is laid flat, the distance between the center of the ground conductor of the first conductor set and the center of the nearest insulated conductor of the second conductor set is 1, the center-to-center spacing of the insulated conductors of the second conductor set is 2, and 1/2 is greater than 0.7.

A guarded coaxial cable assembly including at least a pair of conductors, one or more rails, and a jacket covering these parts such as a first rail extending alongside two nearby conductors, the rail and the conductors embedded in an outer electrically insulating jacket, the outer jacket having a pair of generally opposed bearing surfaces for bearing transverse loads, the rail operative to reduce outer jacket deformations resulting from transverse loads applied to the bearing surfaces; and, the orientation of the rail and the conductors within the outer jacket operative to limit conductor or conductor jacket deformations resulting from transverse loads applied to the bearing surfaces.