Abstract: A coil spring includes a wire rod and an elastic coat provided on the wire rod. The coil spring includes a coil section including a plurality of coil portions. The wire rod includes a round cross-sectional portion, a cross-section varying portion, and a rectangular cross-sectional portion along the longitudinal direction of the wire rod. The cross section of the rectangular cross-sectional portion is substantially square and has a first plane and a second plane. The first plane and the second plane oppose each other in the coil section. The elastic coat is provided on at least one of the first plane and the second plane. The elastic coat is continuous from the round cross-sectional portion to the cross-sectional variation portion and the rectangular cross-sectional portion.

Abstract: The present invention discloses a telescopic hose and the process technology thereof. The telescopic hose comprises an elastic support member that can be configured to conduct strong electricity; the support member comprises a first wire and a second wire, and the first wire and the second wire are arranged in a double helix structure in cooperation with each other; a hose wall that is wrapped around the outer side of the support member, and at least part of the hose wall between the first wire and the second wire forms a corrugated portion. Through the setting of the above structures, the hose can not only conduct strong electricity, but also stretch back and forth and turn at any angle. In addition, the hose structure is relatively simple, the amount of gas and liquid passing per unit time is larger.

Abstract: An electrical train messenger wire and a catenary system for an electrical train including the electrical train messenger wire. The messenger wire includes a fiber-reinforced composite strength member and a conductive layer surrounding the fiber-reinforced composite strength member, where the conductive layer is fabricated from copper or a copper alloy. The fiber-reinforced strength member advantageously has a high tensile strength, thereby reducing the sag of a contact wire supported by the messenger wire. The catenary system employing the messenger wire may facilitate faster train speeds and may obviate the need for cantilever systems such as balanced weight anchors to maintain tension in the contact wire.

Abstract: A composite cable includes a plurality of power lines, one signal line unit, and a sheath collectively covering the plurality of power lines and the one signal line unit. The signal line unit includes a plurality of pairs of signal lines, and an inner sheath covering a first assembled article. The first assembled article is formed by arranging the signal lines to be paired at each pair of adjacent vertices of a polygon with an even number of vertices in a cross-section perpendicular to a longitudinal direction of the signal line unit and twisting all the signal lines together. A twisting direction of a second assembled article formed by twisting the plurality of power lines and the one signal line unit together is different from a twisting direction of the first assembled article.

Abstract: An apparatus for a coaxial transmission line is provided. The apparatus can include a dielectric member having an inner surface defining a bore along a longitudinal axis of an inner conductor of the coaxial transmission line; and a first conductive member mounted axially around the dielectric member and extending along the longitudinal axis. A cross-section of an outer surface of the first conductive member can define a first perimeter. A cross-section of an inner surface of the outer conductor of the coaxial transmission line can define a second perimeter. The first perimeter can be smaller than the second perimeter and thereby provide clearance between a portion of the outer surface of the first conductive member and the inner surface of the outer conductor of the coaxial transmission line when the apparatus is positioned in an annulus defined by the inner conductor and the outer conductor of the coaxial transmission line.

Abstract: An asymmetric Stockbridge damper having at least six and as many as ten resonant frequencies. The damper includes two assemblies, each having a primary weight at the end of a messenger cable and two secondary weights at the ends of thin beams. The thin beams are mounted at one end to the primary weight and each support a secondary weight at an opposite end. The thin beams extend parallel to the messenger cable. The messenger cable is affixed to a clamp assembly which clamps to an overhead transmission line. The clamp assembly includes a toggle crank generating a theoretically infinite clamping force on the transmission line.

Abstract: A device for establishing grounding of an installation of different types includes one or more cables, wherein a ground rail or a ground conductor, ground rails or ground conductors, or a ground point or ground points are grounded by the one or more cables including a combination of electrically conductive wires or conductors in at least one inner core and at least one outer layer which surrounds the inner core wholly or partly, and a bore extending, in at least one of ground and a rock, with a depth of more than 100 m. The one or more cables are laid in the bore. The electrically conductive wires or conductors in the at least one inner core include hundreds of thin conductors surrounded by the at least one outer layer that includes coarse conductors having a diameter at least two times more than a diameter of the thin conductors.

Abstract: High capacity (10 GW, for example) passively cooled non-superconducting underground high voltage direct current electric power transmission lines (100) of very low loss (1% per 1,000 km, for example) and competitive cost. The transmission lines (100) include segment modules (101) linked together with compliant splice modules (102) between the segments (101), typically installed in a protective conduit (103). The segment modules (101) include relatively rigid pipe-shaped conductors (117) insulated by pipe-like solid insulating layers (131) to form segment modules (101) that resemble pipe. The segment modules (101) are linked together through radially and axially compliant splice modules (102) to form the transmission line (100).

Abstract: It is disclosed a high voltage electric cable having a longitudinal axis and comprising a conductive core having a first cross section area. The conductive core comprises a solid, central conductor. It further comprises at least three solid, sector conductors stranded around the central conductor. The central conductor has a second cross section area and the ratio between the second and first cross section areas is of from 1/130 to 1/20.

Abstract: A multimedia cable, particularly one designed to carry digital signals in accordance with an HDMI standard, which comprises two or more concentric rings of conductor cores arranged about a central conductor core.

Abstract: Helically stranded thermoplastic polymer composite cable (10) includes a single wire (2) defining a center longitudinal axis, a first multiplicity of thermoplastic polymer composite wire (4) helically stranded around the single wire (2), and a second multiplicity of polymer composite wire (6) helically stranded around the first multiplicity of thermoplastic polymer composite wire (4). The helically stranded thermoplastic polymer composite cable (10) may be used as intermediate articles that are later incorporated into final articles, such as electrical power transmission cables, including underwater tethers and underwater umbilicals. Methods of making and using the helically stranded thermoplastic polymer composite cables are also described.

Abstract: Disclosed herein is a polymer substrate for a flexible display, comprising a reticular superelastic alloy structure and/or an annular superelastic alloy structure therein. The polymer substrate has an improved flexibility because the superelastic alloy structure is embedded therein.

Abstract: A bend resistant cable includes a stranded wire including a plurality of child stranded conductors each having a plurality of strands, the plurality of child stranded conductors being circumferentially disposed and stranded. A stranding direction of the plurality of strands of the child stranded conductors circumferentially adjacent to each other is different from each other.

Abstract: A cable exhibiting reduced crosstalk between transmission media includes a core having a profile with a shape which defines spaces or channels to maintain a spacing between transmission media in a finished cable. The core is formed of a conductive material to further reduce crosstalk. A method of producing a cable introduces a core as described above into the cable assembly and imparts a cable closing twist to the assembly.

Abstract: A tension-resistant electrical conductor includes a central core wire and at least a first inner wire layer and a second outer wire layer arranged over the central core wire. The central core wire is made of copper or a copper alloy. The first inner wire layer includes, in the circumferential direction, an alternating sequence of copper wires and wires having higher tensile strength, arranged over the central core wire, and the second outer wire layer, and any further outer wire layer, is composed exclusively of copper wires.

Abstract: A manufacturing method of an ultrafine wire including a conductor formed from a plurality of wire, the method comprising: twisting three wires into a twisted wires; and forming the conductor by compressing the twisted wires through a compressing hole of a compressing die after the twisting. A ratio of a cross section of the conductor after compressing to an area of the compressing hole is 80% to 83%.

Abstract: This invention relates to an aluminum conductor composite core reinforced cable (ACCC) and method of manufacture. An ACCC cable (300) has a composite core and at least one layer of aluminum conductor (306). The composite core (303) comprises a plurality of fibers from at least one fiber type in one or more matrix materials. According to the invention, unique processing techniques such a B-Staging and/or film-coating techniques can be used to increase production rates from a few feet per minute to sixty or more feet per minute.

Abstract: A conductor of an electric wire, and an insulated wire which are excellent in corrosion resistance and recyclability, of which the strength which is decreased by weight reduction and diameter reduction is improved. The conductor includes a strand which includes a first elemental wire made from pure copper and a second elemental wire made from a copper alloy. In the conductor, a cross-sectional area of the first elemental wire as a percentage of a cross-sectional area of the conductor is preferably within a range of 10 to 90%. Examples of the copper alloy include a Cu—Ni—Si alloy, and a copper alloy containing Sn, Ag, Mg, or Zn. The conductor may be compressed concentrically. The insulated wire is prepared by covering the conductor with an insulator.

Abstract: An electric transmission-cable is provided, comprising a cable core having at least two individually coated and stranded wires, and a conductor surrounding the core, wherein the core is compacted. Further, a method of fabricating such compacted steel core is provided.

Abstract: A process of producing an overhead transmission conductor. The process comprises: (a) continuously hot rolling a bar of AA 1350 aluminum or a similar aluminum alloy to form a rod; (b) hot-coiling the rod at a temperature preferably in a range of about 300 to 400° C. to provide an aluminum electrical conductor rod having an electrical conductivity in a range of 61.8 to 64.0% IACS and a tensile strength in a range of 8,500 to 14,000 psi; (c) without subjecting the rod to an annealing treatment, drawing the rod into wire: and (d) stranding the wire into cable to form the overhead transmission conductor. The invention also relates to an ACSS conductor produced by the process.

Abstract: A damper assembly staking system that provides for staking damper weights onto a messenger is disclosed. The damper assembly includes damper weights having a forked side which accepts a messenger. A hole is drilled in the forked side of the damper weight to receive the messenger. A staking hole is then drilled into the bottom of the damper weights. The staking hole extends just past the side of the messenger hole and is sized to receive a staking ball. Staking of the damper weight is accomplished by pressing the staking ball into the staking hole via a hardened dowel pin to secure the messenger within the damper weights.

Abstract: The invention relates to a power transmission conductor, in particular for overhead electric lines, and including at least one central composite core made up of continuous fibers impregnated by a thermosetting resin matrix, the core being coated by at least one layer of insulating material, with aluminum or aluminum alloy conductor wires being wound around the core. According to the invention, the conductor comprises a short-circuiting device for short-circuiting said fibers with said conductor wires.

Abstract: The present invention includes a resistance heating wire comprising at least one uninsulated conductor strand and at least one additional strand spirally wound about a core strand in one layer, the at least one additional strand, the core strand, or both being non-conductive or conductive and having a non-conductive layer.

Abstract: This invention relates to the design and manufacture of Stockbridge type vibration dampers for overhead power transmission lines. The invention provides a Stockbridge vibration damper comprising a pair of damping weights joined by a stranded steel cable, a clamp attached to the cable at a location intermediate the weights for attachment to an overhead power transmission line. The stranded steel cable comprises two or more layers of wire, wherein at the point of connection of the damping weight to the stranded steel cable one layer of wires is attached to the weight and the remaining layer(s) of wires is/are free to move.

Abstract: A metal tube is formed from a metal tape. The metal tape is rounded to be abutted at the both side edges, and the edge-abutted portion is welded to provide a butt-welded seam. The metal tube includes an inner iron base layer, a chrome layer provided on the base layer, and an outer chrome oxide layer provided on the chrome layer. The chrome oxide layer is preferably toughened at the outer surface to provide an appropriate frictional resistance relative to forming tools.

Abstract: An electrical overhead transmission conductor cable having a steel reinforcing core which exhibits improved characteristics and unexpected conductivity above about 64% IACS is manufactured of a steel core covered by at least one stranding layer which is formed of round or trapezoidal shaped wire strands subjected to annealing before heat treatment and drawn and stress-relieved/annealed after stranding is completed, to provide a finished cable which includes an aluminum conductive portion which is dead soft, or "O" temper. The steel core of the cable carries substantially the entire tension load of both the core and conductors when suspended between vertical towers. The overhead transmission cable may be formed of trapezoidal cross section conductors wires for improved vibration performance characteristics.

Abstract: Concentric Compressed Unilay Stranded Conductors are formed of certain combinations of compressed wires, such as 1+7+12, 1+6+11 or 1+7+12+17, which have nominally equal diameters. The combinations of conductors or wires are selected so that the number of wires in any two adjacent layers, including a central layer, are not divisible by a common number with the exception of the integer one. The stranded conductors are optionally formed to have sectored cross-sectional configurations.

Abstract: An implantable lead conductor comprises at least one helical coil formed from at least one electrical cable. Each cable is formed from several wires twisted in a ropelike configuration with at least some of the wires being helically wound around a central axis of the cable. Each wire is a composite comprising a core of a first material and a coveting of a second material, with all adjacent wires belonging to the same cable in uninsulated contact with each other. Preferably, the core material is highly conductive, and the covering material is strong and biocompatible. The helical coil has a lumen for insertion of a stylet to facilitate insertion through a vein.

Abstract: The present invention provides a wire for a press-connecting terminal which has a high flexibility, and achieves a high reliability for a connection portion at the time of press-connection, and also provides a method of producing a conductor of such a wire. The wire provides a stranded conductor and an insulator covering the conductor. Wire elements of the stranded conductor are concentrically twisted in layers in the same direction at the same pitch, and the stranded conductor is compressed into a circular cross-section in such a manner that a space factor of the cross-section of the conductor is not less than 99%. The present invention also provides a multi-layer compressed concentric stranded conductor which enables a uniform compression of a base stranded wire.

Abstract: An electric wire or cable having at least one aluminum conductor with extruded insulation with or without a semiconducting extruded screen or screens has the surface of the metallic conductor textured to provide a mechanical interlock with extruded material applied closely to it. This reduces the effect of shrink-back when the wire or cable is cut back for termination or jointing, and may thus allow faster extrusion in manufacture.

Abstract: An annular conductor consists of a central core (dielectric), circumscribed by a tubular helically wound braid of sets of pairs of strands (insulated or uninsulated), with an electrically insulating protective covering around the braid, and an outermost aluminum foil wrapping circumscribing the protective covering.

Abstract: An electrical overhead transmission conductor cable having a steel reinforcing core which exhibits improved characteristics and unexpected conductivity above about 64% IACS is manufactured of a steel core covered by at least one stranding layer which is formed of round or trapezoidal shaped wire strands subjected to annealing before heat treatment and drawn and stress-relieved/annealed after stranding is completed, to provide a finished cable which includes an aluminum conductive portion which is dead soft, or "O" temper. The steel core of the cable carries substantially the entire tension load of both the core and conductors when suspended between vertical towers. The overhead transmission cable may be formed of trapezoidal cross section conductors wires for improved vibration performance characteristics.

Abstract: Concentric Compressed Unilay Stranded Conductors are formed of certain combinations of compressed wires, such as 1+7+12, 1+6+11 or 1+7+12+17, which have nominally equal diameters. The combinations of conductors or wires are selected so that the number of wires in any two adjacent layers are not divisible by a common number with the exception of the integer one. Compression of wires in one or more layers is such as to provide area reductions within the range from 0 to approximately 19% for the layers affected.

Abstract: An electrical overhead transmission conductor cable having a steel reinforcing core which exhibits improved characteristics and unexpected conductivity above about 64% IACS is manufactured of a steel core covered by at least one stranding layer which is formed of round or trapezoidal shaped wire strands subjected to annealing before heat treatment and drawn and stress-relieved/annealed after stranding is completed, to provide a finished cable which includes an aluminum conductive portion which is dead soft, or "O" temper. The steel core of the cable carries substantially the entire tension load of both the core and conductors when suspended between vertical towers. The overhead transmission cable may be formed of trapezoidal cross section conductors wires for improved vibration performance characteristics.

Abstract: There is provided a superconducting strand for alternating current which is formed by stranding 13 or more superconducting wires having a diameter smaller than that of a non-magnetic core member in a single-layered form on the outer peripheral surface of the core member and which can efficiently remove heat caused by AC loss, avoid a quenching phenomenon and stably maintain the superconducting state. Preferably, an electrically insulataive braided layer formed of polyester fiber is interposed between the core member and the stranded superconducting wires and stable insulation can be maintained therebetween, thereby preventing flow of coupling current caused by defective insulation and suppressing partial heat generation. The superconducting wire contains a large number of NbTi superconducting filaments and a non-magnetic stainless steel wire can be preferably used for the core member.

Abstract: An electric wire conductor for use in automobiles made by twisting a plurality of strands together. Each of the strands has a surface layer made of copper or a copper alloy and a core made of steel containing carbon and other elements such as Si, Mn, Ni and Cr. Also, the core may be made of an Fe-based alloy containing Ni or Cr. This structure allows a substantial reduction in the weight of conductor.

Abstract: A multi-strand electrical cable having electrically conductive strands of different cross-sections, i.e. cross-sectional areas, arranged in ascending order of strand cross-section from the center toward the outer circumference of the cable and sized in accordance with an irrational and preferably golden ratio progression in such a way that larger strands are located outwardly toward the cable circumference relative to smaller strans and stabilize the smaller strands against resonant vibration in a manner such as to reduce cable resonance produced by fluctuating current flow through the cable.

Abstract: The invention relates to a compound cable, such as an aluminum cable, an aluminum alloy cable, aluminum cable steel reinforced or an aluminum alloy cable steel reinforced with reduced audible noise for use in a high voltage transmission line.The surface of each of the aluminum wires to constitute the outermost layer of the cable is treated in water or aqueous vapor of more than 90.degree. C. so as to form a hydrophilic hydrated film on said surface, or more than 3 grooves are provided on the outer periphery of each of the aluminum wires in excess of 30% of such wires to constitute the outermost layer of the cable, a hydrated film being caused to form on the surface including the grooves thereof, so that the raindrops adhering to the surface may readily disappear due to the improved hydrophilic property and draining property of the surface of the cable thereby preventing the development of the corona discharge.

Abstract: A cable which can be exposed to moisture, especially for medical apparatus, has at least one electric tinsel conductor. The material of the metal foil has a high portion of nickel to prevent corrosion caused by moisture.

Abstract: A cable assembly including a plurality of wire conductors of varying diameters and a strand of fibrous material wrapped around each conductor or bundles of conductors.

Abstract: The surface of an aluminum conductor is roughened, for example, by blasting. A hydrophilic film such as a boehmite film, an anodic oxide film and a chemical conversion film is formed on the roughened surface. A protective film made of a wetting agent or a hydrophilic resin is formed on the hydrophilic film. The conductor may comprise a compressed aluminum conductor.

Abstract: A cable in which a core is surrounded by a plurality of bundles of wire conductors. Each bundle is formed by a plurality of wire strands twisted around a central conductor which is wrapped by a strand of dielectric material.

Abstract: An insulated conductor for a wire harness comprising a conductor and an insulation with which the conductor is covered, the insulation being formed of thermoplastic polyurethane having shore D hardness of more than 50, thickness of less than 0.2 mm, and an adherence of the insulation to the conductor less than 2 Kg/10 mm, being measured as the required force to pull 10 mm of the insulation off the conductor.

Abstract: A novel construction of a trailing wire antenna radiating element using conductive material in the central core wound in a direction opposite to the conductive material on the outer layer in the skin effect area to reduce AC impedance. To compensate for the strength lost with the conductive material in the core area, high tensile strength and non-magnetic material such as stainless steel or beryllium copper is used in the outer layer. For a given diameter wire cable, the present device has much lower impedance and much higher strength while remaining more flexible.

Abstract: A conductor for overhead transmission of electrical energy. The conductor comprises an inner core and an outer conductor layer comprised of a plurality of strands helically wound on and lengthwise of the core. The strands are of trapezoidal shape in cross-section and have outwardly facing surface provided with deformations spaced apart along the length of the strands. The deformations are effective to reduce the drag of the air moving against and across the conductor.

Abstract: The invention relates to ACSR conductors having two or more layers of conductor strands wound helically around a steel core, the layers being wound alternately in right-handed and left-handed helices. The AC/DC resistance ratio of such a conductor can be greatly reduced by appropriate selection of the lay factors of the strand layers in relation to the cross sectional areas of the respective layers. The unbalanced mechanical torque can also be greatly reduced by appropriate selection of the lay factors of the strand layers in relation to the means diameters of the layers and the outside diameter of the conductor.

Abstract: The electric conductor comprises at least three kinds of element wires which are electrically connected with each other at least at their both ends, and the electric conductor performs a superior signal transmission characteristics for audio signal and so on.

Abstract: A conductor device having at least one spiral which is formed from at least one conductor, each conductor consisting of wires which are stranded together to form a bundle. In addition, the wires belonging to a conductor can all consist of the same material or of different materials, one of which has a large breaking strength and the other one having high electric conductivity. The conductor device can connect, for example, in a heart pacemaker, the contact electrode inserted in the heart with an electric pulse generator. The conductor device provides a relatively high electric conductance with great flexibility, expandability, breaking strength and, in particular, fatigue resistance.

Abstract: A submarine power cable conductor consisting of at least one layer of stranded metal wires, all of said wires being laid in the same direction and at a periodically varied angle.

Abstract: A galvanized high strength steel wire for use in stranded steel core of an aluminum conductor, steel reinforced is disclosed. The steel composition thereof consists, by weight, essentially of:C: 0.4-1.2%,Si: not more than 2.0%,Mn: not more than 2.0%,Al: not more than 0.1%,Cr: 0-5.0%,Cu: 0-1.0%,Ni: 0-1.0%,V: 0-0.5%,Nb: 0-0.2%,Ti: 0-0.2%,Zr: 0-0.2%,with the balance iron with incidental impurities of which the amounts of P, S, N and oxygen are:P: not more than 0.025%,S: not more than 0.015%,P+S: not more than 0.03%,N: not more than 0.010%,Oxygen: not more than 0.004%.