Abstract: A tube type cable protection and guide device in which the device can be easily manufactured by extrusion molding without changing the size of a mold so that devices of different lengths can be made. Smooth linear and flexional movements can be made while sufficiently ensuring dimensional stability and torsional rigidity of the device thus assuring stability of the cable accommodating space. A tube type cable protection and guide device includes integrally molded inner circumferential wall forming portions. The inner wall forming portions are interdigitatedly fitted in a male-female relationship in a longitudinal direction of the sheet forming a flush inner flat surface.

Abstract: An electrical power transmission device has a phase conductor and an encasing conductor. The phase conductor is used for transmission of an electrical power flow. The encasing conductor is divided into a plurality of sections, and the sections are connected by way of at least one assembly with a variable impedance.

Abstract: A laid cable configuration contains cables, preferably electric cables, data and information transport cables and/or control cables, in particular fiber optic cables, and fluid transport tubes and is to be disposed in galleries, tunnels, shafts, pipes, channels or the like, in particular water and/or waste-water guiding systems. The configuration contains at least one cable which is to be laid, which can be unwound from a drum from the region of an opening providing access to an installation shaft or access shaft toward the respective pipe or channel, or drawn or fixed in a stationary manner in the pipe, channel or the like. The configuration includes a flexible and/or articulated carrier band having lateral edges that are laid against an inner wall surface of the pipe or the channel. A weighting body is suspended from the carrier band.

Abstract: A folding assembly type cable protection and guide device is provided in which a cable is accommodated into a cable accommodating space. The cable protection and guide device can be easily manufactured by extrusion molding without requiring different metal molds to accommodate different size cables. Assembly is simplified. Dimensional stability of the cable accommodating space is ensured during both linear and flexion movement which provides smooth linear and flexion movement of the device. The long body cable accommodating space is a rectangularly shaped space surrounded by a synthetic resin film tape. The synthetic resin film tape is assembled through a plurality of folding V grooves which extend along a longitudinal direction of the tape to allow for repeated linear and flexion movement.

Abstract: The present inventions relate generally to umbilicals comprising at least one inner tube and at least one composite fiber element to provide greater resistance to radial compressive forces. Such umbilicals may be used in subsea hydrocarbon production applications.

Abstract: Large-radius conduit box bodies for connecting electrical or telecommunications conduits have a body defining a chamber with an axial hub at one or both ends and at least one perpendicular hub defining passageways communicating with the chamber. The perpendicular hubs are adjoined to the body chamber with a large outwardly curved interior radius. The inner surface of the large radius eliminates sharp corners at the intersection of the hub passageways with the body chamber and provides a maximum radius of curvature for cables pulled through or passing through the chamber and hub passageways.

Abstract: The present invention provides a method of manufacturing a cable sheath by extruding and cross-linking a composition based on a silane-grafted polymer, the method comprising the following steps:

Abstract: A process for manufacturing a cylindrical body comprises a step of blending at least two unsaturated polymer chains each having at least one branch with a carbon-carbon double bond and a hydrosilylizing compound having at least two silicon-hydrogen bonds in the presence of at least one hydrosilylation catalyst, the blend obtained being uncrosslinked, and a step of extruding the blend. The crosslinking of the blend by hydrosilylation is completed after the extrusion step. The process is intended in particular to be employed in the cablemaking field.

Abstract: An electrical and telecommunications conduit body for connecting electrical conduits. The conduit body includes a body defining a chamber and hubs defining passageways communicating with the chamber. The conduit body includes a guide surface disposed between the chamber ends of the hub passageways, and the guide surfaces function to maintain a minimum radius of curvature of cables passing through the passageway defined by one hub and then through the chamber defined by the body to the other hub passageway so as to avoid pulling the cables over sharp corners at the intersections of the hub passageways with the body chamber.

Abstract: A wire capable of operating at high temperatures and a method of making the same is disclosed. The high temperature wire comprises a clay-like compound encircling the conductor. The clay-like insulation eliminates the glass layer or mica tape layer used in wire for applications 450° C. and above.

Abstract: Interconnections are made through a planar circuit by a monolithic short-circuited transmission path which extends from a circuit portion of the planar circuit to the opposite side. The opposite side is ground sufficiently to remove the short-circuiting plate, thereby separating the previously monolithic conductors, and exposing ends of the separated conductors of the transmission path. Connection is made between the exposed conductors of the transmission path and the registered contacts of a second planar circuit by means of electrically conductive, compliant fuzz buttons. The transmission path may be a coaxial path useful for RF.

Abstract: A method and apparatus (10) for making an electrical distribution conductor (12) is performed by heating an electrically conductive uninsulated wire (14) to a predetermined temperature that is at least approximately as hot as the melting temperature of a thermoplastic member (15) and by then forcing the heated wire into the thermoplastic member to provide insulated mounting of the wire for providing an electrical conductor between spaced locations. The wire (14) is engaged with a pair of spaced rotary electrodes (20, 22) to pass an electric current through the wire to provide its heating. The wire (14) can be either fully or partially embedded within the thermoplastic member (15) and can have either electrically connected or insulated junctions with another crossing wire.

Abstract: A semiconducting composition for electric cables, an electric cable incorporating the composition, and a method of producing a cross-linked semiconducting layer of an electric cable are disclosed.

Abstract: A method and a resulting communication cable is disclosed which provides multiple degrees of control of fluid wicking propensity within the interior of the cable by impregnating the cable with a sealing composition and curing the sealing composition therein. The cable includes a central strata, a penultimate strata and an ultimate strata concentrically disposed. The central strata includes a central signal transmission medium circumscribed by a dielectric having an etched exterior surface. The penultimate strata includes a braided conductor circumscribing the dielectric and an inner jacket surrounding the braided conductor and including an etched exterior surface. The penultimate strata further includes at least one non-continuous zone of sealing composition impregnated into the braided conductor and bonding with the etched exterior surface of the dielectric. The ultimate strata includes a braided sheath circumscribing the inner jacket and an outer jacket surrounding the braided sheath.

Abstract: Contact structures exhibiting resilience or compliance for a variety of electronic components are formed by bonding a free end of a wire to a substrate, configuring the wire into a wire stem having a springable shape, severing the wire stem, and overcoating the wire stem with at least one layer of a material chosen primarily for its structural (resiliency, compliance) characteristics.

Abstract: With the object of removing moisture from a system of N≳2 elongated hollow guiding members (20) for cable-like elements (27), in the system a gas flow (G) is maintained. The gas flow is supplied to the system by way of a gas-supply opening (29) of a coupling-in number (23) coupled to first ends (21) of a number of K hollow guiding members (20) and discharged from the system by way of a gas-discharge opening (30) of a coupling-out member (23) coupled to first ends (21) of the L=N−K remaining hollow guiding members. A coupling-through member (26) coupled to second ends (24) of the N hollow guiding members (20) provides a gastight coupling-through between the second ends (24) of the K hollow guiding members and the L second ends of the L remaining hollow guiding members. Preferably K=N−1, and the N−1 hollow guiding members are located within the Nth hollow guiding member.

Abstract: An enclosed high-voltage electric line having a high-voltage electric conductor (2) which is supported inside an enclosure (1) by one or more supporting elements (3, 4, 5), each with at least one insulator part (6, 7, 8). The conductor has at least one borehole (12, 13, 14) to accommodate one end of each supporting element (3, 4, 5). At least one supporting element has a metallic sleeve (9, 10, 11) that passes at least partially through the borehole, is supported in the area of the edge of the borehole, surrounds part of the insulator part and forms in its interior a stop (18) that limits displacement of the insulator part into the borehole.

Abstract: An electrical cable protected against moisture by a tubular liquid crystal film having its molecules multiaxially oriented.

Abstract: There is provided a semiconductive resin composition comprising the following components (A), (B), (D) and (E):(A) 5 to 100 parts by weight of a modified ethylene copolymer obtainable by subjecting an ethylene copolymer (a1) and a vinyl monomer (a2) to graft polymerization conditions,(B) 0.5 to 15 parts by weight of an unsaturated silane compound,(D) 10 to 110 parts by weight of carbon black, and(E) 0 to 95 parts by weight of an ethylene copolymer, provided that the amounts of the components shown above are based on 100 parts by weight in total of the components (A) and (E),wherein the component (B) is incorporated into the composition by subjecting the component (B) to melt graft reaction together with the component (A) and/or component (E) in the presence of 0.

Abstract: A plenum rated cable having a core that includes a transmission medium of a plurality of insulated conductors preferably having thereon an insulating layer of a fluorinated ethylene composition. A shield surrounds the insulated conductors and extends longitudinally within and parallel to the length of the cable and includes a first layer of aluminum material and a second layer of low temperature smoke resistant cellulose acetate or polypropylene. The first and second layers are bonded together. A drain wire drains leakage within the cable generated from the current and allows for easy termination of the shield to a connector. A thermoplastic jacket encloses the drain wire and longitudinally surrounds the shield. The jacket is made preferably of a polyvinyl chloride composition.

Abstract: A gas-insulated cable includes a plurality of sections separated by sealed partitions, each section including a cylindrical steel case, a cylindrical aluminum screen coaxial with and inside the case and three conductors. A monitoring device includes, between the case and the screen, optical fibers equal in number to the number of sections of the cable and extending from one end to the other of the cable, each of the sections being monitored by a single fiber. The monitoring device further includes at least one optical internal arc detector inserted in series into each fiber in the corresponding monitored section, at each end of the device, a device for detecting light conveyed by the optical fibers, and at least one optical threshold temperature detector inserted in series into each fiber in the corresponding monitored section.

Abstract: The system serves to transmit electrical energy in conurbations. It has a gas-insulated cable (1) having at least one high-voltage electrical conductor (8) arranged in a pipe (101) filled with insulating gas. The gas-insulated cable (1) contains at least two underground cable sections (11, 12), which can be operationally interconnected at an installation point (5) accessible from the outside. Such a system is distinguished by high availability, is easy to maintain and can be produced in a method in which impairment of the infrastructure of the conurbation accommodating the system is largely prevented.

Abstract: An intermediate layer in which at least one channel-like depression is provided on the outer conductor of a coaxial cable. The depression proceeds helically with respect to the cable axis and at least one light waveguide is arranged in it. An outside envelope is applied outside the intermediate layer.

Abstract: Device and method of protecting a satellite from undesired electrical disturbances without significantly increasing the satellite's weight. The device includes two faraday cage structures around the electronic units of the satellite. The two structures are electrically connected via shielded wires to create one continuous faraday cage. Signals from components located outside the faraday cage to the electronic units are made through filter assemblies. The filter assemblies electronically filter undesired signals before routing desired signals to their destination.

Abstract: A cable has a filling compound (CA1, CA2) containing a swelling powder and at least one additive substance. This additive substance is mixed with the swelling powder and lies between the particles of the swelling powder to provide good water accessibility to the individual particles of the swelling powder given an incursion of water throughout the cable interspaces.

Abstract: A gas insulated device includes a grounded tank filled with an insulating gas and having a conical insulator spacer securely mounted therein to define an interior space. A through-type electric connector extends through and is supported by the insulated spacer and an electric conductor is electrically connected to the through-type electric conductor by a conductor connector. The conductor connector closest to the insulator spacer is positioned such that electric flux lines exiting from the conductor connector intersect with the surface of the insulator spacer in a region in which an electric field has a strength equal to or less than 70% of the strength of the strongest electric field on the surface of the insulator spacer generated by a lightning impulse applied to the gas insulated device.

Abstract: A joint with a boss for fitting to an assembly compartment for assembling together two adjacent lengths of a long-distance gas-insulated three-phase cable, the joint including a boss containing the seats of an externally-controllable valve whose drive combinations make it possible to establish communication independently either between the inside volumes of adjacent lengths, or the outside of the cable with the inside volumes of both adjacent lengths, or the outside of the cable with the inside volumes of one only of the lengths.

Abstract: A plenum rated cable having a core that includes a transmission medium of one or more copper or tin-copper conductors having thereon an insulating layer of an ethylene-chloro tetrafluoro ethylene composition. A first shield surrounds the core and extends longitudinally within and parallel to the length of the cable and includes a first layer of aluminum material and a second layer of cellulose acetate or polypropylene. The first and second layers are bonded together. A second shield surrounds the first shield and extends longitudinally within and parallel to the length of the cable and includes a first layer of aluminum and a second layer of cellulose acetate or polypropylene. The first and second layers are bonded together. A drain wire drains leakage within the cable generated from the current and allows for easy termination of the shield to the connector. A thermoplastic jacket encloses the drain wire and longitudinally surrounds the second shield and is made of a polyvinyl chloride composition.

Abstract: A gas-insulated single-phase cable for long-distance transport of electricity under high tension, the cable including a cylindrical steel case filled with nitrogen under a pressure of at least 10 hectopascals, an aluminum- or copper-based metal conductor held axially inside the steel case by closed insulating cones, and an aluminum case disposed at a short distance from the steel case and constituting a magnetic screen protecting the steel case from the magnetic field generated by the current carried by the conductor. The steel case is separated from the aluminum case by rings of plastics material or of filled polymer, such as polytetrafluoroethylene. Each rings is placed in a groove in a metal collar, with two adjacent portions of the aluminum case being welded to the collar.

Abstract: A gas-insulated high-tension three-phase electricity line which includes a cylindrical steel case and three conductors disposed parallel to the axis of the case, and a magnetic screen constituted by a cylindrical aluminum case placed inside the steel case and very close thereto. The conductors are held by a plurality of sets of three insulating arms secured to one another, the conductors being free to slide through openings formed in the arms, the aluminum case being separated from the steel case by strips of plastics material or of filled polymer having a low coefficient of friction.

Abstract: An electrical power transmission line is particularly adapted for the transmission of electrical power from relatively small and remotely located hydroelectric sites and over rugged terrain. The line has a plurality of conducting elements, preferably assembled from copper tubing or pipe with loosely fitting slip joints to allow for thermal expansion, with concentric outer insulating elements of polyvinyl chloride pipe or tubing, which insulating elements are hermetically sealed together. The conducting element is spaced apart from the inner walls of the insulating element by plural spacers installed therebetween, to provide an air gap between conductor and insulator.

Abstract: A three-phase metal-clad electricity line insulated by gas under pressure, the line including a plurality of lengths each constituted by modules that are assembled together end-to-end, each length being sealed relative to the outside and relative to adjacent lengths, two adjacent lengths being separated by a sliding junction enabling a length to be disassembled without losing gas from the adjacent length, the line being wherein the insulating gas is nitrogen under a pressure of a few tens of hectopascals, and preferably in the range 10 hectopascals to 15 hectopascals.

Abstract: A three-phase electrical power line comprising a sealed tubular envelope of steel filled with insulating gas under pressure, e.g. nitrogen or carbon dioxide CO.sub.2, and having three conductive bars placed therein together with a thin tubular envelope of aluminum which is located between the steel envelope and the bars, wherein the conductive bars are held by collars made of non-magnetic material, having an outside diameter equal to the inside diameter of the aluminum tubular envelope, and possessing three radial arms which are screwed to tabs of insulating supports that enclose the conductive bars.

Abstract: Naval power cable comprises a plurality of insulated electrical conductors, at least a pair of strip cords, a water blocking layer, and a jacket layer. Each electrical conductor has a longitudinal extent and is helically intertwined with the other electrical conductors, to form a core conductor assembly having a longitudinal extent and at least a pair of outer interstices adjacent to the insulated electrical conductors. Each strip cord is disposed along the longitudinal extent of the core conductor assembly and extends into and out of the outer interstices in a spatially periodic manner so as to permit the resulting power cable to undergo severe bends during cable istallation. The water blocking layer is disposed about the core conductor assembly and the strip cords, and prevents passage of water along interstices about the electrical conductors. The jacket layer is disposed over and adjacent to the water blocking layer.

Abstract: A self-supporting electric conductor arrangement, in particular a coil, suitable for arrangement in a vacuum container, contains, as a supporting structure, a tube (18a) of insulating material, e.g. quartz glass, in which is arranged an electric conductor (18b) in the form of a flexible chord or an electrically conducting layer precipitated on the inner wall of the tube. A preferred field of application is a coil-shaped insulated antenna situated in the plasma for a high frequency plasma generator.

Abstract: An electrical wiring material having a cooling function is characterized by a long hollow conductive body within which operating fluid is internally confined. An electrical connection piece is provided at the end portions of the conductive body, or other portions thereof. When used to wire electronic apparatuses, resulting heat is radiated due to evaporation and condensation of the operating fluid within the hollow conductive body. The wiring material may be used to wind a transformer, particularly the low voltage side, to provide a self cooling transformer.

Abstract: Naval power cable comprises a plurality of insulated electrical conductors, at least a pair of strip cords, a water blocking layer, and a jacket layer. Each electrical conductor has a longitudinal extent and is helically intertwined with the other electrical conductors, to form a core conductor assembly having at least a pair of outer interstices adjacent to the insulated electrical conductors. Each strip cord is disposed in and extends along one of the outer interstices of the core conductor assembly. The water blocking layer is disposed about the core conductor assembly and the strip cords, and prevents passage of water along interstices about the electrical conductors. The jacket layer is disposed over and adjacent to the water blocking layer. To provide a power cable construction which has superior physical strength, toughness and resistance to damage, the water blocking layer and jacket layers, are formed from first and second cross-linkable materials, respectively.

Abstract: A coaxial cable conductor (20) comprises a center conductor (22) having a preselected longitudinal shape and a longitudinally split outer conductor (24). The split outer conductor (24) includes a first partial outer conductor (60) comprising a portion of the circumference of the outer conductor along its longitudinal length and a second partial outer conductor (62) comprising the remaining portion of the circumference of the outer conductor along its longitudinal length and mating with the first partial outer conductor (60) along two joints (64). The two partial outer conductors (60, 62) may be mechanically joined and sealed along the longitudinal joints against leakage of radio frequency energy, as by the application of a conductive coating along the joints. The center conductor (22) is supported within the outer conductor (24) by a plurality of electrically insulating dielectric supports (68), leaving an insulating air gap between the center conductor (22) and the outer conductor (24).

Abstract: A high-voltage system has an insulation-gas filled metallic encapsulation which surrounds active parts to which voltage is applied. A first protective coating (3) is provided on the internal surface of the encapsulation, as it is on the external surface of the active parts. As a result, a high-voltage system is provided in which a reduction of the dielectric strength of the insulating gas paths cannot occur as a result of freely mobile particles (5). This is achieved by covering the first protective coating (3) at least partially with a second protective coating (4).

Abstract: A single-pole gas-insulated line duct has a enclosing tube and an inner conductor held centered in place in the enclosing tube by support insulators. Electrode bodies embedded in arms of the support insulators engage either in a slot between flanges of sections of the enclosing tube or lie against the inside wall of the sections with a spring-action contact member. Locking members connect the support insulators and sections of the inner conductor. Coupling members can be introduced into abutting sections of the inner conductor and demonstrate mutli-surface sliding contact elements.

Abstract: Naval power cable comprises a plurality of insulated electrical conductors, at least a pair of strip cords, a water blocking layer, and a jacket layer. Each electrical conductor has a longitudinal extent and is helically intertwined with the other electrical conductors, to form a core conductor assembly having at least a pair of outer interstices adjacent to the insulated electrical conductors. Each strip cord is disposed in and extends along one of the outer interstices of the core conductor assembly. The water blocking layer is disposed about the core conductor assembly and the strip cords, and prevents passage of water along interstices about the electrical conductors. The jacket layer is disposed over and adjacent to the water blocking layer. To provide a power cable construction which has superior physical strength, toughness and resistance to damage, the water blocking layer and jacket layers, are formed from first and second cross-linkable materials, respectively.

Abstract: In the manufacture of a cable core comprising a moisture-impermeable multi-wire conductor, the conductor is stranded in a conventional manner and, after a fluid-impermeable layer of plastics material has been extruded over the conductor to form the core, the core is wound around the hub of a cable drum in such a way that each end of the wound core is exposed and accessible. One exposed end of the wound core is sealed and air is evacuated from the conductor interstices by a vacuum pump cemented to the other exposed end of the wound core. A source of semi-conductive moisture-impermeable compound in a liquid or semi-liquid state is then connected to the exposed end of the wound core and moisture-impermeable compound is drawn into and flows along the evacuated conductor interstices until the interstices are filled throughout the length of the core. The moisture-impermeable compound in the interstices is then permitted to solidify or thicken to such an extent that it will not readily flow from the conductor.

Abstract: A structure for an electrical cable which may be used as a high-frequency signal transmission line and which includes a jacket which is highly permeable by fluids to reduce the time required for stabilization of impedance and transmission speed of the cable upon placement into an environment characterized by a fluid dielectric having a different dielectric constant. The permeable jacket also facilitates electrical connection to a shield conductor of the transmission line, exposed through apertures in the jacket, by use of electrically conductive potting materials, and without the need to remove any portions of the jacket surrounding the shield conductor to which electrical connection is to be made.

Abstract: This invention relates to a novel coating structure composed of a mixture of an energy irradiation curable resin composition and microspheres, which is used to form a thinfilm coating on a small diameter conductor, thus producing an insulated conductor which has low capacitance obtained in spite of the thin-film coating, has very little variation in capacitance due to the manufacturing process, has a smooth coating layer, and can be manufactured quickly.

Abstract: An electrically insulated conductor comprising an electrically conductive element surrounded by ultramicrocellular foamed polymer insulation having a void volume greater than about 75%, wherein the transmission speed of the insulated conductor is greater than 90% of the speed of light. Such insulated conductors are useful in computer and telecommunications applications.

Abstract: A tunnel multiconnect system comprising a substrate of flexible dielectric material, a plurality of at least three first line conductors supported on the substrate to form a multiconductor pattern, a second conductor shaped to form a ground plane, a structure for mechanically positioning the second conductor in spaced relation to the multiconductor pattern to form a tunnel therebetween, and connectors located at each end of the first conductors for coupling the first conductors and the ground plane to respective multiport terminals of electrical subassemblies thereby forming a flexible high speed ribbon interconnect system.

Abstract: A bonded sheath cable (20) includes a core (22) and a longitudinally wrapped outer shield (36) which encloses the core. An outer surface of the shield is provided with a layer (39) of a copolymer adhesive material which causes the shield to bond to an outerlying plastic jacket (41). The shield is wrapped longitudinally about the core to have overlapping portions (51,53) which form a longitudinal seam (38). In order to avoid seam splitting of the jacket along a line aligned with the longitudinal edge (55) of the outer overlapping portion, control means (60) comprising a polymeric material is provided to extend in bicircumferential directions from the longitudinal edge thereby reducing the bond along the overlap seam and allowing the cable to bend and/or twist without causing a stress concentration in the plastic overlying the longitudinal edge.

Abstract: A low distortion cable made of multi-strand conductors including a dielectric core, a plurality of conductive strands of solid cross-section wrapped around the core in a single layer and a plurality of dielectric spacer strands, at least one of which is interspersed between each adjacent one of said conductive strands to form therewith a single layer of alternating conductors and dielectrics about a core. The support for the conductive strands is only at the lines of contact with adjacent strands and the core. A dielectric insulatr surrounds and supports the layer of strands and core in a unitary assembly, the interstices between strands and dielectrics, where not in contact along lines of support, being filled with a dielectric gas, such as air.

Abstract: A strain compensated fiber optic cable composed of a hollow central member made from an elastic material capable of being physically enlarged, such enlargement capable of being at least partially reversed upon demand; and, a plurality of optical fibers having a first pitch diameter disposed, either in the sidewall of the central member, or on the outermost surface of the central member, so that upon enlargement of the central member, the first pitch diameter of the optical fiber can be changed to a second pitch diameter and upon reversal of the enlargement, the second pitch diameter can be changed to either the first pitch diameter or another pitch diameter.

Abstract: An insulating polyolefin laminate paper and a method for producing such a paper in which first and second fiber paper layers are laminated to a polyolefin film layer. The fiber paper layers have an impermeability of 20 to 4000 Gurley-seconds. At least one of the fiber paper layers is mechanically deformed in such a manner that irregularities are produced having a depth of 2 to 50% of the thickness of the fiber paper layer. The mechanical deformation is accomplished prior to lamination. Before lamination, the water content of the fiber paper layers is controlled to be no more than 4%. Preferably, the thickness of the fiber paper layers is at least 30 microns. Furthermore, an electric power supply cable includes an insulating polyolefin laminate paper as an insulating layer.