Abstract: A pull-in head assembly (8) for releasably connecting a pulling arrangement (112) to an elongate flexible structure (4, 6). The pull-in head assembly 8 comprises a pull-in head having a body (30) which defines a pulling axis X of the pull-in head. The body (30) has a front end and a rear end and a bore (48) which extends through the body (30) along the pulling axis X. The bore (48) is configured such that a pulling line (28) can be threaded through the body (30).

Abstract: A splice connects segments of coiled tubing and power cable together. The splice has a base and a head, each having an interior conical surface and a collet with fingers that deflect inward in gripping engagement with one of the segments in response to axial movement of the head collet and the base collet. A compression sleeve extends between the base collet and the head collet and exerts forces on the collets while the base and head are being secured together. An insulator tube slides over each of the power conductors. A retainer ring for each insulator tube grips one of the power conductors and abuts a shoulder in the insulator tube to prevent movement of the insulator tube along the power conductor.

Abstract: A crimping terminal includes a crimping part that is compressed to a conductive part of an electric wire, and a buffer layer formed on a surface where the crimping part contacts the conductive part. The buffer layer includes a resin, a plating or a grease and a conductive microscopic particle that is mixed and dispersed therein. The microscopic particle includes a fractal structure including a fine protrusion on a surface of the microscopic particle.

Abstract: Under compression by molds (31a, 31b), a wire (25), a covered area (27), and a crimping portion (5) are compressed and their cross-sectional areas decrease. Here, A1 is the cross-sectional area of the wire (25) after compression. That is, A1 is the sum of the cross-sectional area of the each strand after compression. Also, 131 is the cross-sectional area of the covered area (27) after compression. In the present invention, the compression rate for the wire (25) is set between 50% and 80%. Also, the compression rate for the covered area (27) is set between 40% and 90%. The amount of compression by the molds (31a, 31b) is set so that the compression rates are within these ranges. In the present invention, the compression rate is calculated by: (cross-sectional area after compression)/(cross-sectional area before compression). That is, 80% compression rate means that the cross-sectional area has decreased by 20% due to compression. That is, the relationships of 80%?(A1/A0)?50% and 90%?(B1/B0)?40% are satisfied.

Abstract: A method is provided for preparing a wire for installation of a terminal. The method comprises removing an insulating layer from a conductor to expose a portion of a conductor. The method further includes attaching a conductive foil layer to a portion of the exposed portion of the conductor by applying pressure to the conductive foil layer. Terminated wires are also provided.

Abstract: A rope terminal fixing method is provided, which may be used easily at a construction site, causes less shearing load, and may reliably prevent the falling-off of the rope. The rope terminal fixing method comprises the following steps. A tubular terminal metal fitting which comprises a proximal opening, a distal opening, and a through hole communicating the proximal and distal openings is prepared. A terminal of a rope is inserted through the proximal opening into the through hole, a portion of the terminal of the rope extended from the distal opening is loosened, and a diameter-enlarging member is fixed to a core wire of the rope. Then, the terminal of the rope is brought back into the through hole. A fixed width portion extending in an axial direction of the terminal metal fitting is pressed from the outside in a circumferential direction by swaging, such that a protrusion constraining the rope so as to reduce its diameter is formed in the through hole.

Abstract: An electrical wire includes a bundle of electrical conductors that has an end segment that extends to an end of the bundle. Each electrical conductor in the bundle engages at least one other electrical conductor. The electrical wire also includes conductive particles disposed between and engaging at least some of the electrical conductors in the bundle along the end segment. The conductive particles are configured to provide an electrical connection between the corresponding electrical conductors engaged by the conductive particles.

Abstract: An object of the invention is to improve electrical connection performance by increasing a pressure of contact between an electric wire and a terminal. A conductor press bond part (11) of a terminal is formed in substantially a U-shaped cross section opened upward by a base plate (11A) and a pair of conductor crimp pieces (11B, 11B) extended upward from both right and left lateral edges of the base plate (11A). A range from the base plate (11A) to the root of the pair of conductor crimp pieces (11B, 11B) is formed as a curved wall (11H) with substantially a circular arc shape, and when a radius of curvature of an inner surface of the curved wall (11H) is R and a radius of a conductor of the electric wire is r, the curved wall is set so as to satisfy R<r.

Abstract: A compression accessory including an insert sleeve configured to enclose at least part of a core strand of a transmission conductor, the insert sleeve having at least one slot on an outer wall of the insert sleeve and a bored sleeve configured to enclose at least part of the insert sleeve, an inner wall of the bored sleeve configured to interact with the at least one slot.

Abstract: Disclosed are several examples of an apparatus for connecting the free ends of two electrical power transmission lines having conductor strands disposed around a central, reinforcing core. The examples include an inner sleeve having a body defining an inner bore passing through an axially-extending, central axis, an outer rim surface disposed radially outward from the central bore, and one or more axially-extending grooves penetrating the body at the outer rim surface. Also included is an outer splice having a tubular shaped body with a bore passing coaxially through the central axis, the bore defining an inner rim surface for accepting the inner sleeve. The inner bore of the inner sleeve accepts the reinforcement cores of the two conductors, and the grooves accept the conductor strands in an overlapping configuration so that a majority of the electrical current flows between the overlapped conductor strands when the conductors are transmitting electrical current.

Abstract: An electric wire with a terminal includes a conductor, and the terminal is connected to an end portion of the conductor. The terminal includes a first connecting portion connected to an electrical equipment and a second connecting portion connected to the conductor. The second connecting portion includes a first connection surface and a second connection surface opposite to the first connection surface. The conductor includes a first conductor and a second conductor that are connected to the first connection surface and the second connection surface, respectively, by ultrasonic bonding. The connecting portion of the first connection surface overlaps the connecting portion of the second connection surface in a perpendicular direction to an axial direction of the conductor.

Abstract: Disclosed are several examples of an apparatus for connecting the free ends of two electrical power transmission lines having conductor strands disposed around a central, reinforcing core. The examples include an inner sleeve having a body defining an inner bore passing through an axially-extending, central axis, an outer rim surface disposed radially outward from the central bore, and one or more axially-extending grooves penetrating the body at the outer rim surface. Also included is an outer splice having a tubular shaped body with a bore passing coaxially through the central axis, the bore defining an inner rim surface for accepting the inner sleeve. The inner bore of the inner sleeve accepts the reinforcement cores of the two conductors, and the grooves accept the conductor strands in an overlapping configuration so that a majority of the electrical current flows between the overlapped conductor strands when the conductors are transmitting electrical current.

Abstract: An inter-wire connection structure includes: first and second wires connected to each other and each having a core sheathed with an insulating sheath section and including a plurality of element wires; a single-wire structure section in which the plurality of element wires of at least one of the cores exposed from the insulating sheath sections are made into a single; a core joint section in which both the cores exposed from the insulating sheath sections are joined at a position where an entire region of the single-wire structure section is not overlapped, and having an outer peripheral surface in a shape of a circumferential surface; and a tube tightly covering portions of the cores exposed from the insulating sheath sections including the single-wire structure section and the core joint section, and portions of the insulating sheath sections.

Abstract: There is provided a superconducting joint for electrically connecting a first multifilamentary superconducting wire including a plurality of first superconducting filaments embedded in a first stabilizer matrix and a second multifilamentary superconducting wire including a plurality of second superconducting filaments embedded in a second stabilizer matrix.

Abstract: Connection of electrical cables comprising a connecting cable 2 formed from aluminium strands 4 and a metal connecting part 6. Contact corrosion is prevented when the welding takes place by firmly bonding the connecting cable 2 to the connecting part 6 by means of ultrasonic welding in such a way that a sealant 8 which is displaced between the connecting cable 2 and the connecting part 6 during the ultrasonic welding is situated between the aluminium strands 4.

Abstract: A joined wire fastener combination includes an outer sleeve having a pre-mounted implosive charge layer. A pair of enlargement members is provided. Each enlargement member is configured to be individually inserted into an adjacent, respective end of an associated stranded conductor. Each enlargement member has an outer diameter that is less than an outer diameter of at least one of the adjacent, respective ends of the stranded conductors, prior to insertion of the enlargement member into the respective end. Each enlargement member is individually inserted into the adjacent, respective end of the associated stranded conductor without the removal or partial removal of any strands of the associated stranded conductor.

Abstract: Connection of an aluminium stranded lead 2 to a connection part 10, comprising a stripped end 4 of the aluminium stranded lead 2 and a metal connection part 10 which is materially connected to the stripped end 4 of the aluminium stranded lead 2. An inexpensive welded connection can be produced in that an end face of the stripped end 4 of the aluminium stranded lead 2 is welded to the connection part 10 by means of torsional ultrasonic welding.

Abstract: A method for interconnecting a first electric cable, constituted by a carbon fiber bundle enveloped in a first insulating sheath, with a second cable constituted by a metallic conductor enveloped in a second insulating sheath; the method provides for the removal of a first portion of the first sheath that covers a first end of the carbon fiber bundle, and the removal of a second portion of the second sheath that covers a second end of the metallic conductor, for an extension greater than that of the first portion. The method then provides for the spiral-like winding of the second end of the metallic conductor, starting from the first end of the first cable, until such metallic conductor affects the first sheath, and then the change of direction of advancement of the spiral defined by such second end, to provide at least one loop that covers the first sheath.

Abstract: In a DC power transmission and distribution line, a power cable line for making it possible to easily supply power to various electric power machines used for operation of the line is provided. A power cable line includes a power cable (1g, 1r, 1p, 1m, 1n) for executing DC transmission and distribution, an AC superposing section 2 for superposing an AC component on the power cable, and a branch power supply section 3 for taking out power induced by the superposed AC component from the cable. The AC component is superposed on the power cable by the AC superposing section 2 and AC power together with DC power is transmitted to the power cable. The superposed AC component is taken out by the branch power supply section 3 provided in a midway point of the cable and is supplied to various electric power machines.

Abstract: One aspect of the present invention can include a conductor to be installed on a vehicle for high current use including a stranded copper wire connected to an end portion of a single-core aluminum cable, an intermediary conductor made of copper is connected to the stranded copper wire and an end face of a core of the single-core aluminum cable is cold welded connected to an end face of a welding shaft formed on the intermediary conductor having approximately a same diameter as the core of the single-core aluminum cable.

Abstract: Inwardly-directed projecting portions (2, 3) are formed in a bent manner respectively at distal ends of a pair of clamping piece portions (4, 5) which are continuous with each other, and form a wire connection portion (7) of a terminal (1). A conductor portion (9) of a wire (8) is located on the inner sides of the pair of clamping piece portions (4, 5), and the pair of clamping piece portions are pressed over an entire periphery into a circular shape, and are extended in a peripheral direction, thereby causing projecting extension portions (2?, 3?), including the projecting portions (2, 3), to bite into the conductor portion. Before the pressing operation, the pair of clamping piece portions (4, 5) may be provisionally pressed to be curved, thereby causing distal ends of the projecting portions (2, 3) to bite slightly into an outer peripheral surface of the conductor portion (9).

Abstract: A connector for joining the interfacing ends of cables, one to another. Each cable includes a first plurality of conductor strands with each of the ends having an enlarged terminal portion of greater diameter than the cable adjacent said end. The connector includes a connecting tube, and an explosive layer provided about at least a portion of an outside surface of the connecting tube. The explosive layer includes a first portion of explosive and a second portion of explosive separated therefrom by an intervening interportion distance.

Abstract: A joined cable assembly joins the interfacing ends of cables, one to another. The joint includes a pair of cables, each cable having an end and comprising a first plurality of conductor strands. A terminal enlarging member is provided longitudinally of each cable producing an enlarged terminal portion of greater diameter than said cable adjacent said end. A connecting tube is compressed at least around the conductor strands at the enlarged terminal portions of each cable, thereby joining the cables.

Abstract: An electrical connector assembly including a connector member; a housing having a general tube shape; wedges and an extension spring member. The housing includes a front end and a rear end. The front end of the housing is adapted to be fixedly connected with the connector member. The wedges are adapted to be located in the housing directly between the housing and a core member of a cable conductor. The connector member is adapted to push the wedges into the housing as the connector member and the housing are being connected with each other. The extension spring member surrounds the wedges to bias the wedges towards a center channel formed by the wedges.

Abstract: An electromagnetic welding method includes the steps of piling a metal plate and an electric wire on a coil which generates a magnetic field when a current is applied into the coil, with a core wire portion of a central part of the electric wire being exposed while core wire portions except the exposed core wire portion are coated with a coating member. The coil and the exposed core wire portion are arranged lined up along a diameter direction of the electric wire, and a current is applied into the coil to generate a magnetic field so as to generate an eddy current in both the metal plate and the exposed core wire portion, thereby welding the metal plate to the exposed core wire portion.

Abstract: In order to make it possible to produce a secure and permanent contact connection between an electrical conductor made from a soft material, in particular an aluminum conductor, and a contact element made from a harder material, the conductor is encapsulated at least partially in a contact region by an electrically conductive material. The electrically conductive material is harder than the soft material of the conductor. The electrically conductive material is applied with the aid of a thermal spraying process, with the result that there is a pressure-free electrical connection between the soft material and the sprayed-on material. Electrical contact is made with the contact element indirectly via the sprayed-on material. The thermal encapsulation by the spraying in the contact region makes it possible for a reliable electrical contact to be made even in the case of soft materials having a tendency towards cold flow.

Abstract: A method of joining the interfacing ends of cables, one to another, wherein each comprises a plurality of conductor strands, comprising (i) providing each of the ends with an enlarged terminal portion of greater diameter than the cable adjacent the end, (ii) inserting the ends into a connecting tube having an outer layer of an explosive charge, and (iii) detonating the explosive layer so as to compress the connecting tube around the conductor strands. The method offers a cheaper, faster and simpler method of joining a bundle of wires and the like than prior art methods.

Abstract: An electrical resistance heating cable, including a resistance heating wire having a resistive conductor, an insulation at least partially surrounding said resistive conductor; and an end. A crimp connector is connected to the end. A thermally conductive sleeve at least partially surrounds the end and is positioned between the crimp connector and the insulation.

Abstract: The present invention provides an electrical connection device. The device comprises a pin, socket or lug and a means for electrically connecting the pin, socket or lug to groups of strands of an individual multi-bunch core of a machine, reeling or trailing cable. The means is divided into a plurality of portions and each portion is arranged to receive at least one group of strands wherein, in use, the portions are individually connected to the or each respective group of strands whereby the strength of the connection is improved.

Abstract: In a coaxial cable, a first insulating sheath covers an outer periphery of a first conductive wire. The first insulting 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 dosed 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 end of a conductor having a stranded conductor layer wound around a tension member made of resin-reinforced carbon fiber is cut back to expose the end of the tension member. The exposed end of the tension member is inserted into a metal fitting having multiple longitudinal slits. A metal sleeve is then fit over the metal fitting and also partially over the stranded conductor layer before compress-fitted into place. Accordingly, it is possible to attach, with good workability and sufficient tensile strength, a conductor that has a tension member made of resin-reinforced carbon fiber.

Abstract: An improved method of ultrasonically welding together two conductors having differing lateral dimensions comprising selecting a welding capture fixture having lateral sides spaced apart by a distance substantially equal to the lateral dimension of a first conductor having the greatest lateral dimension. The first conductor is placed in the selected fixture so that the first conductor is proximate to or substantially engages both lateral sides of the fixture. The second conductor is formed so that at least a first portion extends laterally beyond a second portion. The second conductor is placed into the select fixture so that the first portion is proximate to or substantially engages one of the lateral sides of the fixture and the second portion is proximate to or substantially engages the other lateral side of the fixture with both portions substantially engaging the first conductor.

Abstract: An improved cable splice of the type in which first and second ends of a casing taper conically toward the casing's longitudinal axis. First and second cable-receiving apertures are provided in the respective first and second ends of the casing. A first set of cable-gripping jaws is disposed within the first end of the casing; and, a second set of cable-gripping jaws is disposed within the second end of the casing. At least one spring is provided within the casing, between the jaws, to urge the first and second jaws toward the first and second apertures respectively. A first plug is positioned within the inner end of the first set of jaws to bias the first set of jaws against the spring by forcing the jaws radially outwardly. A second plug is positioned within the inner end of the second set of jaws to bias the second set of jaws against the spring by forcing the jaws radially outwardly. The plugs are free of connection to the jaws.

Abstract: An electrical connector which is adapted to join two or more wires together and comprises a pair of hollow cylinders joined together and disposed such that one end portion of each cylindrical is free to be bent back upon itself after a wire is inserted therein to make good contact between the cylinder and the wire.

Abstract: A grounding ferrule is characterized by a generally cylindrical hollow member having at least three equiangularly circumferentially spaced axially extending slots which cooperate to define a plurality of circumferentially adjacent webs. Each web has a plurality of radially inwardly extending protrusions provided on the inner surface thereof. The ferrule responds to a radially inwardly directed crimping force applied circumferentially to the exterior surface of the webs by deflecting radially inwardly to define a constricted central region.

Abstract: An electrical connector for connecting a first conductor to a second conductor. The electrical connector includes a generally E-shaped body which defines first and second conductor receiving cavities for accommodating the respective conductors. An intermediate member extends generally centrally in the interior of the body member, serving to separate the conductor receiving cavities. The body member is provided with an opening communicating with the conductor receiving cavities, by means of which the conductors are adapted to be positioned within the cavities. A plurality of rib members project from the body member into each of the cavities, and are deformable under pressure to vary the size of the cavities.

Abstract: A method for sealing the interstices between individual cables of a cable bundle to achieve the sealing of the cable bundle in the longitudinal direction applying a liquid resin system to the area between the cables, the system comprising the reaction of a polyisocyanate and at least one fatty acid polyol having a hydroxy number of at least about 150 and an acid number of no greater than about 1.0, followed by curing thereof to a non-flowable state.

Abstract: An electrical connector for connecting a first conductor to a second conductor. The electrical connector includes a generally C-shaped body which defines first and second conductor receiving cavities for accomodating the respective conductors. The body member is provided with an opening communicating with the conductor receiving cavities, by means of which the condutors are adapted to be positioned within the cavities. An integral hingedly connected retaining member is associated with one of the conductor receiving cavities whereby, once a conductor has been placed in the latter cavity, the retaining member may be manually rotated to a position wherein it secured the condcutor in the cavity. The connector is then intended to be placed over a second conductor, such that the second conductor is received in the other conductor receiving cavity. The connector is adapted to be compressed, by means of a compression tool, so as to substantially close the opening in the body member.

Abstract: An electrical connector for connecting a pair of electrical conductors is disclosed. The connector includes a connector body defining a connection nest which accommodates a pair of conductors having either similar transverse cross-sectional shapes or conductors having different transverse cross-sectional shapes. The connector body includes a conductor receiving channel in the bottom wall thereof and a channel plug which is frangibly connected to the bottom wall. The plug may be moved into position within the channel to accommodate the pair of conductors having similar transverse cross-sectional shape or may be removed from the connector to accommodate a pair of conductors having different transverse cross-sectional shapes.

Abstract: An improved connector having a looped wire retained in one piece of the connector and providing a second piece having a concentric bore and able to engage a free end of said looped wire to cause the wire to constrict upon rotation of the second piece relative to the first piece to bind wires inserted through the second piece into a receptacle of the first piece.

Abstract: A conductive metal coupling sleeve harder and springier than the conductor and connector to be joined is interposed between them. The sleeve having patterned inside and outside surfaces is placed over the conductor end and the conductor-sleeve combination is inserted into the bore of the desired connector and subjected to compressing forces to crimp the components together. The patterns of the sleeve interlock with the conductor and the walls that define the connector bore. The springiness of the sleeve insures good electrical conductivity between the components in the event there is some springback of the components upon the termination of assembly compression or creep during use.

Abstract: Method for joining electrically and mechanically the multiple aluminum wires of a pair of electrical cable conductors in which the bared conductor ends are beveled and welded together and a metal sleeve, which is more rigid than the aluminum of the conductors, is applied around the weld and lengths of the conductors at each side of the weld and compressed until the sleeve has an outer size substantially equal to the size of the portions of the conductors at each side thereof. The sleeve has inner grooves for receiving displaced aluminum, and if the conductors have central channels, the channels are joined at the conductor ends by a relatively incompressible tube which fits into the channels and which may have peripheral grooves for receiving displaced aluminum. Also, a cable joint made by such method.

Abstract: A core grip for use in conjunction with a conduction cable having an outer conductor and core element in a hollow elongated compression valve wherein the grip is disposed on an end portion of the core of the cable after the outer conductor has been stripped away and the compression valve is disposed about the grip and is crimped into an engagement with the grip which in turn mechanically engages the core wherein the core grip is formed from two separate semi-circular cylindrical halves made of a deformable metal which when joined together from a solid cylindrical grip having an axial core therethrough coated with grit which is adapted to receive the core of the cable.

Abstract: A crimp connector for electrical wires has two chambers formed from a unitary piece of sheet metal, one chamber for magnet wires and one chamber for connecting wires. Each chamber is formed by a bridge part and a row of a plurality of fingers which depend from the bridge part essentially radially with respect to the axis of the connector and are essentially circularly bent around the bridge part.

Abstract: The present invention is an improved ignition system for use with internally fired electrical connectors of the type used to splice heavy, high voltage electrical cable. More particularly, the invention consists of an ignitor assembly and a device for removing the electrical detonating wires from the connector after firing.

Abstract: An assembly for making a mechanical or electrical connection between a conductor and the like and another element. The assembly comprises a tubular housing having a tapered portion converging toward an open end of the housing, the housing containing a unitary, tubular, conductor gripping member. The conductor gripping member has an outer tapered surface converging toward one of its ends and toward the open end of the housing. At least one coil spring made of relatively large gauge spring material is held in compression within the housing and in a manner that will drive the conductor gripping member toward the open end of the housing with substantial force when the compression of the spring is released. The tapered end of the housing is then effective to collapse the gripping member on a conductor or cable inserted in the housing and into the member.

Abstract: An aluminum electrical conductor is electrically joined to a copper electrical conductor by a cold weld lap joint which is substantially free of copper-aluminum intermetallic compounds. The overlapped portions of the conductors are deformed at least 74% and no greater than 82% to achieve a weld joint which has both excellent physical properties and excellent electrical properties. The cold weld lap joint is a reliable electrical connection for electrical circuits experiencing current densities of more than 1000 amperes per square inch and a sustained high temperature of 125.degree. C. and above.

Abstract: This invention relates to a device for splicing the ends of two large diameter cable of the type having an inner core of steel wires around which aluminum wires are helically wrapped. The device includes outer and inner housings. A firing barrel and associated pistons are positioned within the inner housing along with a first set of cable gripping jaws. A second set of cable gripping jaws are positioned within the first housing and are in tandem with the first set of jaws.

Abstract: An electrical conductor (10) having at forward end portion (F) of the conductor an integral electrical contact portion consisting of a plurality of fine, axially aligned wire strands (21), each wire having an acutely angled end surface (22) for mating with another electrical contact, said contact wires being an integral part of and continuous with the wires of said conductor in a rear portion (R). Preferably, the wires in the forward portion of the conductor are held radially together by a sleeve or holder which is inserted over the forward end, around the wires and crimped in place, separating the rear portion (R) of the conductor, which generally has insulation (30) around the conductor for a portion of its length from the forward contact portion.

Abstract: Described herein is an improved connector sleeve and a method of forming wire wrap post terminations with this connector sleeve. The sleeve comprises a solder ring and a fixturing member positioned in an axially displaced relationship within a heat recoverable sleeve such that the fixturing member and the solder ring are held in place by the heat recoverable sleeve.