Abstract: A Drain wire led out from the interior to the exterior of a shielded wire is covered with a heat shrinkable tube made of an insulating resin or with a rubber tube including silicon or EPDM (ethylene-propylene rubber). A water-stop agent is penetrated between the element wires of the drain wire in the heat shrinkable tube or the rubber tube. In addition, A boundary portion between a terminal connected to an end of the drain wire and the heat shrinkable tube is covered with a rubber stopper.

Abstract: An extra-fine copper alloy twisted wire including a plurality of copper alloy wires with a wire diameter of 0.010 to 0.025 mm twisted together, each of the copper alloy wires including 1 to 3 weight % of silver (Ag) and a balance consisting of a copper and an inevitable impurity, the copper alloy twisted wire further including a tensile strength of not less than 850 MPa, and an electrical conductivity of not less than 85% IACS. The extra-fine copper alloy twisted wire includes a solid insulation with a thickness of not more than 0.07 mm formed on an outer circumference of the extra-fine insulated wire.

Abstract: A coaxial cable connector having an insulator is provided, the connector insulator including a body having a circumferential surface and a central longitudinal axis, the body having a first axial end and a second axial end and having a first reentrant cavity extending from the first end toward the second end, wherein at least a portion of a wall surface of the first reentrant cavity is oblique to a central axis of the body. A corresponding method of insulating a coaxial cable connector is disclosed.

Abstract: A flexible cable including an outer sheath having an inner surface, the inner surface forming a channel to receive at least one conductor and a support member. At least one conductor and support member are positioned within the channel to substantially resist deformation of the outer sheath.

Abstract: Coaxial cable shielding. In one example embodiment, a coaxial cable includes a center conductor, a dielectric, a tape, and a jacket. The tape defines first and second edge portions that each borders an interior portion. The thickness of the first edge portion is less than the thickness of the interior portion. The dielectric surrounds the center conductor. The tape is wrapped around the dielectric such that the first edge portion overlaps with the second edge portion. The jacket surrounds the tape.

Abstract: A particle trap for a gas-insulated busbar (GIB) for high-voltage transmission systems. The particle trap is a circumferential cavity located and formed integral with a flanged end of the GIB's enclosure. In operation, particles present in a space between a central conductor and the enclosure of the GIB are guided to the particle trap by the presence of an electric field which exists between the central conductor and the grounded enclosure, and by the influences of gravity, mechanical vibration and gas flow. Once the particles enter the trap, the particles are immobilized.

Abstract: A coaxial cable connector having an insulator is provided, the connector insulator including a body having a circumferential surface and a central longitudinal axis, the body having a first axial end and a second axial end and having a first reentrant cavity extending from the first end toward the second end, wherein at least a portion of a wall surface of the first reentrant cavity is oblique to a central axis of the body. A corresponding method of insulating a coaxial cable connector is disclosed.

Abstract: An electric cable for conveying signals, the cable having a diameter of less than 2 mm and comprising at least one conductor in an insulating sheath, the sheath having a dielectric constant ? of less than 1.7. To achieve this, the sheath is made of PTFE and it includes at least one continuous cell.

Abstract: A protective jacket in a coaxial cable. In one example embodiment, a coaxial cable includes two or more internal components and a jacket surrounding the internal components. The internal components include an electrical conductor configured to propagate a signal and an outer conductor surrounding the electrical conductor. The jacket includes two or more protruding portions and two or more recessed portions. Each recessed portion is positioned between two of the protruding portions. Each of the protruding portions makes contact with the outer conductor and each of the recessed portions does not make contact with the outer conductor. A method for manufacturing a coaxial cable with a protective jacket is also disclosed.

Abstract: The present invention relates to a coaxial cable comprising a dielectric layer which comprises as a component (A) a propylene homo- or copolymer having strain hardening behaviour and to the use of propylene homo- or copolymer having strain hardening behaviour for the production of a dielectric layer of a coaxial or triaxial cable.

Abstract: Thermal mass compensated foam support structures for coaxial cables such as inner conductors and or inner conductor support structures. The foam support structures provided with an adhesive solid or high density foam polymer or blend layer to increase the thermal mass of the support structure enough to allow the foam to surround the adhesive solid or high density foam polymer or blend layer without forming unacceptably large voids in the foam dielectric as the foam dielectric cures.

Abstract: In a high-frequency coaxial cable (1), an internal solid layer (3), an insulation layer (4) made of a foam resin, an external solid layer (5), and an external conductor (6) are provided on the periphery of an internal conductor (2) in this order. The external solid layer (5) has a dielectric dissipation factor of 1.0×10?4 or less at 2 GHz. Thereby, the voltage standing-wave ratio and the attenuation of the high-frequency coaxial cable (1) are reduced.

Abstract: The invention provides an insulated wire having a conductor and an insulator of paste extruded PTFE fine powder around the conductor. The paste extruded insulator has at least one closed continuous longitudinal air channel spaced apart from the conductor. The invention further provides a process for forming an insulator around a conductor by paste extruding lubricated PTFE fine powder in an extrusion device comprising a die, mandrel, and at least one channel-forming member. The die and mandrel form a converging chamber leading to an extrusion orifice and the channel-forming member is positioned in the orifice. The mandrel has a central bore for supplying the conductor. Lubricated PTFE fine powder is forced through the chamber and out of the exit of the orifice as a lubricated green extrudate around the conductor forming an insulator with at least one closed longitudinal air channel spaced apart from the conductor.

Abstract: Disclosed is a coaxial cable. The coaxial cable according to the present invention includes: an inner conductor located at the center portion of the cable; an insulator surrounding the outside of the inner conductor; an outer conductor surrounding the outside of the insulator; and a sheath surrounding the outer conductor, wherein the outer conductor is provided to have a corrugated tube shape having corrugation crests and corrugation troughs formed therein, and wherein an outer diameter “I” of the insulator, an inner diameter D1 of the corrugation crest formed in the outer conductor, and an inner diameter D2 of the corrugation trough formed in the outer conductor have the following relationship: D 1 + D 2 2 ? I ? D 2 , and an air layer is formed between the insulator and the corrugation crest of the outer conductor, and a straight line section is provided in the corrugation crest of the outer conductor.

Abstract: A coaxial cable includes an electric conductor, an insulating layer formed on a periphery of the electric conductor, wherein the insulating layer includes an insulating material including a fluorine-containing polymer obtained by grafting at least one compound selected from unsaturated carboxylic acids and esters of the unsaturated carboxylic acids to a tetrafluoroethylene-perfluoroalkylvinylether copolymer, a conductive layer formed on a periphery of the insulating layer, wherein the conductive layer includes a sintered product from a metallic nanoparticle paste, and an outer insulating layer formed on a periphery of the conductive layer.

Abstract: An insulator supporting an inner conductor within the outer conductor of a coaxial device formed from a portion of thermally conductive polymer composition with a thermal conductivity of at least 4 W/m-K. The portion is dimensioned with an outer diameter in contact with the outer conductor and a coaxial central bore supporting there through the inner conductor. Cavities may be formed in the portion for dielectric matching and or material conservation purposes. The insulator may be cost effectively fabricated via injection molding.

Abstract: A center conductor having an effective outer diameter; a dielectric material around the center conductor, a semi-conductive layer around the dielectric material, an outer conductor, or shield, around the dielectric material; the shield having an effective inner diameter; wherein the center conductor has a cross-sectional area of 3.141×10?4 in2 or less; wherein the cable has a capacitance of about 15 pF/ft or less; wherein the cable maintains electrical continuity under a tensile force of 25 lbf or greater; wherein the cable has a flex life of greater than about 30,000 cycles; and wherein the cable is a musical instrument cable.

Abstract: A multi-tool process station includes a tool sub-station having a plurality of electrically powered tools moveable between an operating position and a ready position; a voltage source spaced therefrom by a distance; at least one controller spaced from the tool sub-station and in communication with the tools; a cable structure extending across the distance and having not more than one outer cable sheath at any point along the distance, the cable structure supplying power from the voltage source to a plurality of the tools and further carrying control signals to the plurality of tools. The cable structure may consist of a single continuous cable, or may comprise multiple cable segments, such as first and second cables connected in series. The tool sub-station may be disposed proximate a vehicle manufacturing line and the plurality of tools comprise at least a plurality of screw spindles.

Abstract: A geometrically-structured coaxial cable may prevent infiltration of water vapor and other contaminants by using a closed cell structure. The cable may be fabricated by wrapping bubble tape around its central conductor. Alternatively, plastic may be extruded through channels to create a plurality of layers. In either case, these layers are staggered in a zig-zag pattern to ensure that no radial spokes connect the inner and outer conductors of the coaxial cable without passing through a plurality of dielectric layers.

Abstract: A cable is installed in coiled tubing for use in. downhole wells; the cable having an expandable jacket (22) extruded around it. After being installed in the coiled tubing, and the expandable jacket is caused to expand, securing the cable in the coiled tubing. The expandable jacket is caused to expand by the application of heat or by the application of a liquid hydrocarbon. The expandable jacket may be discontinuous along the length of the power cable, discontinuous portions being provided by interspersing the expandable jacket with sections non-expandable material.

Abstract: A coaxial cable, including an outer conductor and an inner conductor adapted to connect to an energy source for treating tissue and first and second dielectric materials disposed between the inner conductor and the outer conductor which position the inner conductor relative to the outer conductor in general concentric relation thereto. The first dielectric material has a first coefficient of thermal expansion and the second dielectric material has a second coefficient of thermal expansion different from the first coefficient of thermal expansion.

Abstract: FEP compositions are provided that provide foam insulation in coaxial cable that surpasses the return loss obtained when PFA is used to make the foamed insulation, one composition comprising a blend of tetrafluoroethylene/hexafluoropropylene copolymers, one of said copolymers exhibiting a strip force of at least about 3 lbf (13.3 N) and another of said copolymers exhibiting a strip force no greater than about 2.5 lbf (11.1 N), said blend exhibiting a strip force of at least about 3 lbf (13.3 N), each said strip force being the force necessary to break adhesion between conductor and said one of said copolymers, said another of said copolymers, and said blend, respectively, and another composition comprising tetrafluoroethylene/hexafluoropropylene copolymer having an MFR of no greater than about 16 g/10 min and containing —CF3 end groups and an effective amount of wire affinity end groups to exhibit a strip force of at least about 3 lbf (13.

Abstract: A coaxial cable may include an inner conductor, an outer conductor, and a dielectric material therebetween. The inner conductor may include a tubular bimetallic layer having a pair of opposing longitudinal edge portions at a longitudinal seam. The tubular bimetallic layer may include an inner metal layer and an outer metal layer bonded thereto. At least one of the opposing longitudinal edge portions may define at least one folded edge portion including an end portion of the inner metal layer extending beyond a corresponding end portion of the outer metal layer and being folded adjacent thereto and defining a non-joined interface therewith. The longitudinal seam may include a welded joint between at least portions of the inner metal layer.

Abstract: A coaxial cable may include an inner conductor, an outer conductor and a dielectric material layer therebetween. The inner conductor may include a tubular bimetallic layer and may have a pair of opposing longitudinal edge portions at a longitudinal seam. The tubular bimetallic layer may include an inner metal layer and an outer metal layer bonded thereto and coextensive therewith. In addition, the opposing longitudinal edge portions may be angled inwardly to define a pair of adjacent inwardly extending tabs.

Abstract: In a high-frequency coaxial cable (1), an internal solid layer (3), an insulation layer (4) made of a foam resin, an external solid layer (5), and an external conductor (6) are provided on the periphery of an internal conductor (2) in this order. The external solid layer (5) has a dielectric dissipation factor of 1.0×10?4 or less at 2 GHz. Thereby, the voltage standing-wave ratio and the attenuation of the high-frequency coaxial cable (1) are reduced.

Abstract: An extra-fine copper alloy wire has: a wire diameter of 0.010 to 0.025 mm; 1 to 3 weight % of silver (Ag), and a balance consisting copper (Co) and an inevitable impurity; a tensile strength of not less than 850 MPa; an electrical conductivity of not less than 85% IACS; an elongation of 0.5 to 3.0%; and a lowering rate in tensile strength of not more than 2%. The lowering rate is represented by [(1??h1/?h0)×100%] where ?h1 is a tensile strength of the wire measured after a heat treatment under conditions of a heating temperature of not more than 350° C. and a heating time of not more than 5 seconds, and ?h0 is a tensile strength of the wire measured before the heat treatment.

Abstract: A method for attenuating resonance frequency responses includes encasing at least one conducting element within a protective sheath and disposing a damping element about the at least one conducting element. The damping element is fixedly secured to the at least one conducting element for inhibiting relative movement between the damping element and the conduit. The method also includes positioning the at least one conducting element concentrically within a conduit to define a gap between the at least one conducting element and the conduit.

Abstract: An electric cable for conveying signals, the cable having a diameter of less than 2 mm and comprising at one conductor in an insulating sheath, the sheath having a dielectric constant ? of less than 1.7. To achieve this, the sheath is made of PTFE and it includes at least one continuous cell.

Abstract: A powerfeeder spacer includes a spacer hub, a neutral cable opening having an interior cable opening wall extending through the spacer hub, a plurality of spaced-apart spacer fingers extending from the spacer hub and a plurality of spaced-apart power cable notches each having a generally curved notch wall between the plurality of spaced-apart spacer fingers.

Abstract: A telecommunication wire having an electrical conductor is surrounded by an insulator. The insulator includes a main body made of a first polymeric insulator material. The main body defines a plurality of channels that run generally along a length of the electrical conductor. Each channel includes a first region and a second region. The first regions are filled with a second polymeric insulator material having a dielectric constant that is lower than the first polymeric insulator material. The second regions are filled with a gas such as air.

Abstract: A coaxial cable (10) includes at least one conducting wire (110), at least one insulating layer (120) coating a respective conducting wire (110), at least one shielding layer (130) surrounding the at least one insulating layer (120), and a single sheath (140) wrapping the at least one shielding layer (130). The shielding layer (130) includes a metal layer and a carbon nanotube film.

Abstract: A coaxial cable (10) includes at least one conducting wire (110), at least one insulating layer (120) coating a respective conducting wire (110), at least one shielding layer (130) surrounding the at least one insulating layer (120), and a single sheath (140) wrapping the at least one shielding layer (130). The shielding layer (130) is a carbon nanotube film.

Abstract: A coaxial cable (10) includes at least one conducting wire (110), at least one insulating layer (120) coating a respective conducting wire (110), at least one shielding layer (130) surrounding the at least one insulating layer (120), and a single sheath (140) wrapping the at least one shielding layer (130). The shielding layer (130) includes a number of carbon nanotube yarns.

Abstract: A high impedance coaxial cable with a fine wire inner conductor and method of manufacture. An inner conductor less than 0.1 inches in diameter is coated with an adhesive resin. The coating having a thickness at least 50 percent of the inner conductor diameter. A foam dielectric surrounds the adhesive resin and an outer conductor surrounds the foam dielectric.

Abstract: A coaxial cable includes: a metallic inner conductor formed of a first material and having a first thickness; a dielectric layer circumferentially surrounding the inner conductor formed of a second material and having a second thickness; a metallic outer conductor circumferentially surrounding the dielectric layer formed of a third material and having a third thickness; and a polymeric jacket circumferentially surrounding the outer conductor formed of a fourth material and having a fourth thickness.

Abstract: A coaxial cable and multi-coaxial cable which comprise a low-permittivity insulator having an air layer, whose outer diameters can be reduced, which have excellent flexibility, and which allow productivity to be increased. In the coaxial cable, an electrically conductive filament body for forming an inner conductor, and a filling yarn made of an electrically insulating resin are twisted together, the outside of this twisted body is covered with a tubular insulator so that the insulator makes contact with the electrically conductive filament body and the filling yarn. An outer conductor is provided to the external periphery of the insulator. The multi-coaxial cable has a plurality of the coaxial cables, and the coaxial cables are covered with a common sheath composed of an insulating material.

Abstract: A method for attenuating resonance frequency responses is disclosed. The method includes encasing at least one conducting element within a protective sheath and disposing a damping element about the at least one conducting element. The damping element is fixedly secured to the at least one conducting element for inhibiting relative movement between the damping element and the conduit. The method also includes positioning the at least one conducting element concentrically within a conduit to define a gap between the at least one conducting element and the conduit.

Abstract: A coaxial cable including a core conductor, an insulator arranged around the outer periphery of the core conductor, and an outer conductor arranged around the outer periphery of the insulator coaxially relative to the core conductor, where the electrical conductivity is 20% IACS or more and the Young's modulus of the core conductor is 245 GPa or more. In the present invention, the core conductor is preferably made of a material of one or more kinds selected from the group including tungsten, tungsten alloy, molybdenum, and molybdenum alloy.

Abstract: A high speed data communication link has a circuit for providing a differential signal having first and second opposite phase components and a triaxial cable connected to receive the positive phase component of the signal on the inner conductor and the negative phase signal component on the center conductor which is made of wire mesh. An outer conductor such as a foil tape or wire mesh has a drain wire connected to ground and provides electric field shielding. EMI cancellation is provided by this arrangement particularly where the inner and center conductors have approximately the same resistance.

Abstract: A semi-rigid cable coaxially includes a brass wire (1) having a silver-plated layer (2) formed by plating silver having a high conductivity, a dielectric body (3) prepared by using fluorocarbon resin, a polymer film (4) having a conductive film (inner layer of an outer conductor) (5) formed by deposition, and a metal pipe (6) having a low thermal conductivity as an outer layer of the outer conductor. The polymer film (4) is inserted into the metal pipe (6) with the conductive film (5) toward the outer circumference so that the conductive film (5) is electric contact with the metal pipe (6). The conductive film (5) has a thickness in a range not smaller than 1 micron and not greater than 10 microns.

Abstract: A first conductor is provided on an outer circumference of a central conductor with an insulator therebetween, a second conductor is provided on a concentric circle having the central conductor as its center and outside the first conductor with an insulator therebetween. A coaxial cable is formed by coating the outside of the second conductor, which is on the concentric circle having the central conductor as its center, with an insulating external coating. A DC voltage source is able to apply DC voltage having a predetermined voltage value between the first conductor and the second conductor such that the direct current flowing in the first conductor and the second conductor takes a desired value. A noise barrier zone formed by the electro-magnetic action of the desired current is formed in the part surrounded by the first conductor and the second conductor on the outer circumference of the central conductor.

Abstract: A corrosion-resistant radio-frequency coaxial cable includes an inner conductor, a layer of dielectric material surrounding the inner conductor and an outer conductor comprising a laminate surrounded by at least one braided aluminum wire sheath. The laminate includes at least one layer of aluminum foil bonded to a substrate, where substrate is longitudinally wrapped about the dielectric material. A jacket of weather-proofing material surrounds the braided sheath. A corrosion-inhibiting coating is applied to the aluminum foil of the laminate, which coating is formed of a wax acid polyester. The wax acid polyester includes the compounds of a polybasic acid or anhydride, a polyol, and an effective amount of a lanolin wax acid to form a wax polyester in situ coating. The wax acid polyester is formed by the in-situ reaction of an aqueous emulsion of a polybasic acid or anhydride, a polyol and an effective amount of a lanolin wax acid.

Abstract: RF connection cable 2 for interconnecting an RF coil and an RF processing apparatus in an RF system of a medical MRI apparatus. The connection cable 2 is comprised of an outer sleeve 6 enclosing an inner cable comprising RF conductors 24, an inner sleeve 20 and a shield 22. Between the inner sleeve 20 and the outer sleeve 6 a plurality of spacers in the form of large beads 12-i alternating with small beads 14-i are provided. In this way, a very flexible cable is obtained having comparatively low dielectric losses and a low capacitive coupling with the patient.

Abstract: In a miniature x-ray tube, which may be on the order of approximately 1 mm in diameter or even less, a high voltage cable is provided in various embodiments for conducting current to the cathode of the x-ray tube and for conducting high voltage to the cathode and anode of the tube. In various embodiments of the cable, two conductors occupy a center region of the cable, packed as closely together as possible, in various shapes that are compact and present as smooth as possible an external shape for maximizing dielectric properties against the exterior high voltage ground, surrounding and generally concentric with the inner conductors. The inner conductors, which carry high voltage in opposition to the outer ground, can be in opposed D shapes, coaxial, two flattened conductors side by side, or simply a pair of cylindrical wires positioned as closely as possible.

Abstract: In a coaxial cable, a first insulating sheath covers an outer periphery of a first conductive wire. The first insulating sheath includes at least three insulating layers. A plurality of second conductive wires are spirally side-wound on an outer periphery of the first insulating sheath. The coaxial cable is wound around a core forming a closed magnetic path. Both ends of the first conductive wire serve as one of input terminals and output terminals of the transmission transformer, and both ends of the second conductive wires serve as the other one of the input terminals and the output terminals.

Abstract: An support for coaxial transmission lines is described, having a reduced mass and being configured to reduce bending stresses when subject to insertion or axial load effects.

Abstract: A thin coaxial cable is provided comprising an inner conductor; an outer conductor being an electroplated conductive metal layer; a thin electrically insulating layer made of a polymeric enamel resin or of glass of at most approximately 15 ?m thickness separating said inner and said outer conductor; said insulating glass or polymeric enamel resin layer is coated with a layer of an adhesion promoting primer material or said insulating polymeric enamel resin layer is coated with a layer of ABS resin, and an electroless plated metal layer is deposited between said primer or ABS resin layer and said electroplated conductive metal layer.

Abstract: A flexible test cable has a center conductor (210), a conductive sleeve (240) with an effective electrical length equal to an odd quarter wavelength of a frequency of interest, a dielectric spacer (230) located inside the conductive sleeve (240) for preventing a portion of the center conductor from electrically coupling to the conductive sleeve, and a dielectric joint (220) for maintaining a portion of the center conductor in the middle of an end of the conductive sleeve (240). The conductive sleeve (240) can have a variety of cross-sectional shapes. The dielectric spacer (230) can be formed in a variety of shapes from rigid or compressible dielectric materials. Likewise, the dielectric joint (220) can be formed in a variety of shapes from rigid or compressible dielectric materials. Using the dielectric joint (220) to link together multiple conductive sleeves (240) results in a flexible test cable (200) with electrical transparency at the frequency of interest.

Abstract: The amount of air dielectric in air core coaxial and twinaxial cables is increased by spacer structures installed between the center conductor and the outer shield which have provision for air voids or pockets running lengthwise. The extra air space provides lower effective dielectric constant for the cable. In one embodiment, a single-element extruded spacer is formed with air cavities or voids that run continuously throughout the length of the spacer. Several spacer “profiles” or cross-sections are disclosed that place less solid dielectric mass in proximity to the center conductor. The result is a greater volume of air dielectric, and hence a lowered cable dielectric constant. In a further embodiment the spacer is a circular cross-sectioned element consisting of a central dielectric strength member surrounded with foamed material. Strength strands such as Kevlar® may be added to the spacer.

Abstract: An electrically conductive inside structure of a standing wave barrier surrounds a section of a conductor in a sub-region. It can be displaceably arranged on the conductor section and galvanically separated from it but can be inductively coupled to it. A basic wave trap surrounds the inside structure on a part of its length. It is galvanically connected to the inside structure and to a capacitor. The capacitor is galvanically connected to the inside structure.