Abstract: A composition for electric cables is described. The composition comprises an ethylene copolymer which includes a (poly)alkylene glycol mono(meth)acrylate of formula (I) wherein R.sub.1 =H or CH.sub.3 ; R.sub.2 =H or CH.sub.3 ; n=1-20. The composition may be used as an insulating layer or a semiconducting layer of an electric cable.

Abstract: A composition comprising:(a) polyethylene;(b) as a scorch inhibitor, 1,1-diphenylethylene, substituted or unsubstituted;(c) optionally, a cure booster; and(d) an organic peroxide.

Abstract: A stator winding insulation for improving the dielectric and thermal properties of a main insulation of a conductor bar of an electric machine. The stator winding insulation includes a mica band having at least one layer-like carrier composed of longitudinal threads and transverse threads and a mica-containing layer fixed to at least one face of the carrier with the aid of a binder. In the layer-like carrier, the volume ratio of the longitudinal threads to the transverse threads is greater than or equal to 2.5:1 and a weight ratio of the mica in the mica-containing layer to the layer-like carrier in the mica band is greater than or equal to 6:1.

Abstract: A composition comprising:(a) polyethylene;(b) a cure booster selected from the group consisting of 3,9-divinyl-2,4,8,10-tetra-oxaspiro[5.5]undecane (DVS); a copolymer of ethylene and DVS; and an ethylene homopolymer or copolymer having DVS grafted thereto; and(c) an organic peroxide.

Abstract: Insulated wire or cable, the configuration of which is particularly well suited to the orderly coiling of the cable. The cable's insulation is formed in such a manner as to provide interlocking mating surfaces, which surfaces tend to hold the cable in its coiled configuration once so formed. According to one embodiment, the cable is splittable into its component insulated wires for mechanical or electrical connection thereto. This splitting may be by a slit or notch partially transecting a cross section of the insulated cable. Pulling the plurality of insulated wires in opposite directions tends to separate the cable into its component insulated wire portions. The stackable cable may be implemented utilizing cables; coaxial cables; solid wires; multiple strand wires, whether straight or twisted; and non-metallic electrical conductors.

Abstract: A magnet wire insulation designed to withstand voltage wave shapes present in inverter driven motors for a sustained period of time. A large surface area inorganic oxide, e.g., fumed silica, may be added into the magnet wire insulation for providing improved resistance to insulation degradation. Alternatively, a mixture of the large surface area inorganic oxide with a low resistivity oxide, e.g., chromium oxide, provides a greater improvement in resistance to insulation degradation. The present invention is particularly useful for extending the life of windings in a motor that is subjected to high voltage, steep wave shapes such as those found in inverter driven motors.

Abstract: A cable system is provided which can accomodate electrical and optical cabling. The conductors of the system employ a layer which is impedance-matched to space, decreasing their cross-section to electromagnetic interference. The conductors of the system also employ a layer which symmetrizes electromagnetic interference signals, reducing the effect of interference and crosstalk on the signals carried by the conductors. The system also includes a node interface device for connection to a global electrical and fiber network. The node interface device connects to a user interface device through the cable.

Abstract: Polymeric compositions which contain a thermoplastic aromatic polyester, preferably polybutylene terephthalate, and a polyester block copolymer having a recrystallization temperature greater than 150.degree. C., preferably a thermoplastic elastomer containing aromatic polyester blocks and aliphatic polyester blocks. The ratio of the block copolymer to the aromatic polyester is 0.05:1 to 0.35:1, preferably 0.15:1 to 0.30:1. These compositions are particularly useful as the insulation on hermetic lead wires for use in refrigerant systems. To prevent cracking of such insulation when it is contacted by a varnish used to provide hermetic sealing, it can be covered by a thin layer of a fluoropolymer.

Abstract: A composite metallic wire includes: an inner layer having a cross-sectional shape of a rough circle; and a metal outer layer having a cross-sectional shape of a rough ring; wherein the composite metallic wire has a diameter of 15 .mu.m or less and an electric resistance of 300 .OMEGA./m or less. A composite type magnetic head using as a coil wire a composite wire comprising: (1) a composite metallic wire comprising: an inner layer having a cross-sectional shape of a rough circle; and a metal outer layer having a cross-sectional shape of a rough ring; wherein the composite metallic wire has a diameter of 15 .mu.m or less and an electric resistance of 300 .OMEGA./m or less, and (2) an insulating coat provided in the outer periphery of the outer layer.

Abstract: There is disclosed an insulated wire having an extrusion-coating insulating layer provided on the outer surface of a conductor directly or via some other layer, or provided on the peripheral surface of a multicore wire composed of conductor cores or insulated cores that are collected together, wherein the extrusion-coating insulating layer is made of a resin mixture to be extrusion-coated, which comprises 100 parts by weight of a resin (A) comprising a polyethersulfone resin, as an essential component, and, optionally, a polyetherimide resin, and 10 to 100 parts by weight of a resin (B) comprising at least one resin selected from polycarbonate resins, polyarylate resins, polyester resins, and polyamide resins.

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

Abstract: A flexible flat belt made up of a plurality of covered wires abutting each other in side-by-side relationship. Imaginary lines on the peripheries of the covered wires which are parallel to and remote from the axes of the wires determine at least one plane. The adjacent wires form troughs parallel to and spaced apart from the axes and adhesive is applied to the troughs between adjacent wires. It is preferred that a first adhesive, which sets instantaneously, be applied at spaced apart intervals between adjacent wires. Since this adhesive is spaced apart, flexibility is not impaired. This is used in conjunction with the second adhesive which is non-setting and is supplied substantially throughout the length of adjacent wires. Due to its character, it does not interfere with the flexibility of the flat cable.

Abstract: An electrical insulating polyester film has an apparent density of 1.37 to 0.85 g/cm.sup.3 and a tensile modulus of 2.0 to 4.5 GPa.A film having low oligomer content, low cost, high heat resistance, high impact resistance, superior machinability and processability, assembling stability, and superior visibility is obtained. Furthermore, leakage of current is reduced when it is used for motor insulation.

Abstract: A flexible coaxial cable includes a core including at least one inner conductor and a closed cell foam dielectric surrounding the inner conductor. The flexible coaxial cable also includes a tubular metallic sheath closely surrounding and preferably bonded to the core. The closed cell foam dielectric is a low density polyolefin foam and possesses improved electrical properties over conventional foam dielectrics. The coaxial cable has a velocity of propagation of greater than 90 percent of the speed of light but still maintains high flexibility and bending characteristics.

Abstract: An electric wire in which a carbon film having abrasion resistance and lubricity is formed on the outer surface of an insulation cover made from at least one kind of material selected from rubber and resin, and covering an electric wire body, and a manufacturing method of the electric wire.

Abstract: The invention relates to a multi-layer ballistic cable protector in which additional fiber sheathing layers are replaced by hard, impact-resistant or impact-resistance modified plastic sheathing layers and, if desired, by further soft plastic damping layers.

Abstract: An improved jacket material for insulated electric cable wherein the jacket contains one or more additives of an ion exchange resin and/or an ionic scavenging compound for neutralizing or capturing ionic impurities.

Abstract: This invention relates to a method of embedding electric components or optical components, such as sensors, in a high-temperature metal and the embedded products produced by the method. In the preferred embodiment the components are embedded on a substrate of the high-temperature metal by being placed on a first insulating layer. A second electrically insulating layer, a low thermal conductivity layer, a high thermal conductivity layer, and a primer layer are then deposited in order. The high thermal conductivity layer is in good thermal contact with the substrate. The high-temperature metal is deposited, preferably as molten drops, on the primer layer and the heat from the drops is conducted by high thermal conductivity layer to the substrate while the components are protected by the low thermal conductivity layer.

Abstract: An insulating tape or sheet comprising a polyester film layer and a polyolefin adhesive layer having a flexural modulus of 500-20000 kgf/cm.sup.2. The insulating tape or sheet of the present invention can provide an insulated wire having superior buckling resistance and is very low in cost.

Abstract: There is disclosed an electrical component having an axial direction and two ends for making electrical contact with another component comprising a plurality of electrically conductive fibers in a matrix, the plurality of the fibers being oriented in the matrix in a direction substantially parallel in the axial direction of the component and being continuous from one end of the component to the other end to provide a plurality of electrical point contacts at each end of the component, wherein the component further includes magnetic particles.

Abstract: A heat-resistant combination including a substrate, a first layer, and a second layer. The first layer includes a benzisidazole-based polymer with a first face in contact with the substrate; and the second layer contains a ceramic material and is securely fixed to a second face of said first layer.

Abstract: A high frequency coaxial cable (1) contains a concentric internal conductor (3), a cylindrical insulating layer (7) surrounding the internal conductor (3) and made of a foamed plastic containing more than 50% by volume of air, a tubular external conductor (9) placed over the insulating layer (7), and an outer sheath (11). Cutouts (15, 15') are made in the insulating layer (7) by removing insulation material starting at the periphery (13) of the insulating layer and extending radially inward. These cutouts (15, 15') make it possible to increase the dielectric properties of the insulating layer between internal conductor (3) and external conductor (9).

Abstract: A power cable is disclosed, which comprises a conductor having thereon an insulating layer which comprises a composition comprising from 25 to 35% by weight based on the total amount of the composition of an ethylene-vinyl acetate copolymer resin having a vinyl acetate content of from 25 to 33% by weight, and from 65 to 75% by weight based on the total amount of the composition of polyethylene, the polyethylene containing in the molecule thereof vinyltrimethoxysilane by copolymerization or graft polymerization, the composition containing an organo heavy metal compound as a cross-linking catalyst, the insulating layer is cross-linked by the cross-linking reaction of trimethoxysilane groups in the polyethylene in the presence of water.

Abstract: A coated conductor, its production method, electronic components and electornic devices that are configured with the coated conductors are disclosed. In an electronic component of the invention, a copper wire, which is 5 to 50 .mu.m in diameter, is wrapped in layers around a magnetic core of a coil with an insulation film between them. An insulation coating is formed around the copper wires to insulate the copper wires from each other. Japanese lacquer formed into a thin film is used as the insulation coating on the copper wires. Since Japanese lacquer is used, an extremely thin insulation coating can be formed, thus making it possible to wind more copper wire in the effective winding area of the coil. Furthermore, the production method is simplified and costs are reduced by using a thin-film insulation coating with good insulation performance and durability, (e.g., water resistance, alkaline resistance, acid resistance).

Abstract: An insulating tape for the winding of an electric machine, in particular a rotary machine, may include an electric breakdown-resistant material, such as mica, of a support material, such as glass silk, and a thermoplastic adhesive for holding together the insulating tape. The adhesive may be a thermoplastic material having a continued use temperature at least one insulation class lower than the insulation class provided for the winding. The machine insulation has the required mechanical and electric stability after the winding insulation is impregnated with a hardenable resin.

Abstract: A grease composition for use as a cable filling material which contains about 25 to 75 parts by weight of castor oil or a ricinoleate polyol, about 13 to 71 parts by weight of a hydroxy-terminated polymer of polymerized castor oil or the reaction product of a polyisocyanate compound and castor oil or a ricinoleate polyol, and about 4 to 12 parts by weight of colloidal particles such as silica, clay or mixtures thereof. Optionally, an antioxidant component can be added to impart high temperature resistance, a bleed inhibitor, typically of a rubber component, can be added to improve bleed resistance, a water blocking agent of a superabsorbent compound can be added to reduce water transmission, microspheres can be added to reduce the weight of the formulation, and/or conventional additives such as fungicides, bacteriocides etc. can be included.

Abstract: A high energy coaxial cable is disclosed which is flexible to the extent of allowing a bend radius as short as 11 1/2 inches. The cable will conduct up to 500 kiloamperes and is reinforced to resist the high magnetic forces within the cable caused by the high current conducted. The cable is therefore useful in coupling high current between parts which experience relative movement such as a stationary power supply and a recoiling gun breech.

Abstract: A pulsed voltage surge resistant magnet wire comprising a conductor, a continuous and concentric and flexible uniform coat of base insulation material superimposed on the conductor and an essentially continuous and concentric and uniform pulsed voltage surge shield overlaying the coat of base insulation material.

Abstract: This patent describes a cable which is exceptionally suitable for high frequency signal transmission which includes at least two adjoined insulated conductors which are twisted together to form a pair. The pair(s) of adjoined insulated conductors are preferably encased within a thermoplastic, fluorocopolymer, or rubber type material. The embodiment may employ a metallic shield under the encasement. The variation of center to center conductor spacing within a pair as described above should be less than a value equal to about 0.03 times the statistical average of the center to center conductor spacing. The preferred cable has an average impedance of 90 to 110 ohms with a tolerance of .+-.5% when measured at high frequencies along any 1000 ft. of cable. Additionally, the two adjoined insulated conductors should have an adhesion strength of no more than 5 lbs. force.

Abstract: A fire retardant cable for use primarily as a riser cable in buildings has a plurality of groups of twisted pairs of conductors arranged in a "honeycomb" structure. Each conductor comprises a metallic conducting member encased in a single layer of a non-flame retardant polyolefin material such as high density polyethylene. The groups of conductors are surrounded by a jacket of flame retardant poly(vinyl chloride) material.

Abstract: In an unshielded twisted pair cable, a predetermined number of pairs which are twisted by a predetermined lay-length are covered by a protective sheath. Insulations for insulating conductors for the pairs and the protective sheath are wholly or partially of halogen free polymer having a low dielectric loss tangent and flame-retarding properties. The insulations have a dielectric loss tangent of less than 1.times.10.sup.-2 at 150 MHz and a 2% modulus of at least 0.3 kgf/mm.sup.2.

Abstract: A flame retardant composition comprising an effective synergistic flame retardant combination of a melamine phosphate and tris(neopentyl) nitrilotris(methylphosphonate) suitable for use as an additive to a normally flammable polymer composition, especially wire insulation and cable jackets.

Abstract: In order to provide a coil type high-voltage resistive wire having a lower resistance than and a noise preventing performance similar to a prior art resistive wire while maintaining an inductance level without increasing a diameter and a winding pitch of a resistance wire, a core (3) consists essentially of a center reinforcing core (1) which is obtained by twisting three aramid fibers of 1000 denier and a ferrite core (2) having an outer diameter of 1.3 mm or smaller which is obtained by extruding a mixture of resin or rubber base and ferrite powder around the center reinforcing core (1). A resistance wire 5 made of a copper-nickel alloy wire having a diameter of 35 to 55 .mu.m and an electrical resistivity of 5 to 35 .mu..OMEGA..cm is wound around the core 3 at a pitch of 10000 winds/m or larger in a direction normal to the longitudinal axis of the core (3), so that the resistance value of the resistance wire (5) as a conductor can be set at 4 to 7 k.OMEGA./m.

Abstract: An insulated wire having a conductor coated with insulating material wherein a light absorbing layer is provided between the conductor and the insulating material, thereby an insulating coating can be easily peeled off by means of laser.

Abstract: The present invention relates to an insulated wire comprising a conductor and at least two insulating layers provided on the outer periphery of the conductor. The inner insulating layer is provided directly or via another insulation on the outer periphery of the conductor and comprises a polyolefin compound containing 20 to 80 parts by weight of at least one substance selected from ethylene .alpha.-olefin copolymer, ethylene .alpha.-olefin polyene copolymer (.alpha.-olefin having the carbon numbers of C.sub.3 -C.sub.10, polyene being non-conjugated diene).

Abstract: The present invention is an improved jacketing material for all forms of electro-magnetic energy conductors. The jacket material of the present invention comprises a silicone material that is imbibed into a porous polymer, such as expanded polytetrafluoroethylene, to produce a flexible and durable composite. When applied as a cable jacket, the composite material of the present invention produces dramatic improvement over the use of silicone alone, especially in the areas of load sharing, resistance to fatigue from repeated flexure, and resistance to harsh environmental conditions. The ability of the material of the present invention to withstand repeated autoclave cycles without compromise makes it particularly suitable for cable jacketing in bio-medical applications.

Abstract: The down-hole instrument cable includes a hermetically sealed optical fiber surrounded by a protective buffer layer and a protective gel within a protective tube. A layer of electrical conductors between an inner insulator and outer insulator layer surrounds the protective tube, and electrically conductive strength member strands surround the outer insulator layer. The cable includes an electrically conductive cable head body electrically connected to the strength member strands, and an electrically conductive contact subassembly, through which the optical fiber and electrical conductors extend. The contact subassembly provides a first electrical terminal for connection to the down-hole instrument, the layer of electrical conductors provides a second electrical terminal, and the optical fiber provides an optical signal pathway for the down-hole instrument.

Abstract: A ceramic insulated wire has a conductor core of copper or copper alloy, a stainless steel layer around the conductor core and a chromium oxide film (2A) around the stainless steel layer. The chromium oxide film (2A) is surrounded by an outer ceramic insulator formed by a vapor deposition method. Cladding the conductor core with stainless steel is done by inserting the core lengthwise into a stainless steel pipe, plastically working the resulting composite body to provide a desired size, and oxidizing the stainless steel which contains sufficient chromium for the formation of the chromium oxide film to have a thickness within the range of 10 nm to 1000 nm. The outer ceramic insulator formed by vapor deposition is made of Al.sub.2 O.sub.3, SiO.sub.2, AlN and Si.sub.3 N.sub.4 which provide an excellent heat resistance while the chromium oxide film substantially increases the bonding strength.

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 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 electrostatographic reproduction machine wherein at least a portion of the wiring is formed from partially carbonized polyacrylonitrile filaments having a resistivity of between 1.times.10.sup.2 and 1.times.10.sup.10 ohm-cm. Preferably, the interconnects from the power source to the corona generating means are partially carbonized polyarylonitrile wires.

Abstract: The present invention relates to flame retardant insulation and jacketing compositions useful for wire and cable products which exhibit improved adhesion to the metal conductor. This is achieved by the use of a specific stabilizer package comprised of three specific antioxidants and by varying their relative proportions. The compositions are based on ethylene-vinyl esters and ethylene-alkyl acrylate copolymers and are formulated with a hydrated inorganic filler, an alkoxy silane, a crosslinking agent and the three-component stabilizer package. Antioxidants utilized for the three-component stabilizer package include tetrakis[methylene(3,5-di-tert-butyl-4-hydroxyhydrocinnamate)]methane, pentaerythritol tetrakis(betalaurylthiopropionate) and thiodiethylene bis(3,5-di-tert-butyl-4-hydroxyhydrocinnamate).

Abstract: The present invention relates to an insulated wire comprising a conductor and at least two insulating layers provided on the outer periphery of the conductor. The inner insulating layer is provided directly or via another insulation on the outer periphery of the conductor and comprises a polyolefin compound containing 20 to 80 parts by weight of at least one substance selected from ethylene .alpha.-olefin copolymer, ethylene .alpha.-olefin polyene copolymer (.alpha.-olefin having the carbon numbers of C.sub.3 -C.sub.10, polyene being non-conjugated diene).

Abstract: An electrically insulated wire which has an electrical conductor formed of a base material having an outer conductor surface and a chromium oxide containing layer formed on the outer conductor surface. An electrically insulating nitride layer is provided on the chromium oxide containing layer. The electrically insulated wire has a high insulability at high-temperatures, an excellent flexibility and does not form a gas adsorption source.

Abstract: A cable (20) which may be used for communications, for example, include transmission media (24-24), each having a plastic composition of matter disposed thereabout. The insulation (26) comprises a polyvinyl chloride composition which includes a lubricant and a lead-free stabilization system. The stabilization system includes a calcium-zinc constituent in combination with an antioxidant-metal deactivator complex which provides a sacrificial function to prevent the formation of calcium or zinc chloride which would affect adversely the electrical properties of the insulated conductor. A jacket (28) typically is disposed about a plurality of the transmission media and comprises a non-lead stabilized plastic composition of matter.

Abstract: A polar group-containing ethylene polymer or copolymer having improved insulating properties, or a composition thereof is characterized in that said polar group-containing ethylene polymer or copolymer contains 20 to 8000 ppm of a polar group having a dipole moment of more than 0.8 debye. The polymer can be used in a power cable as insulation.

Abstract: A composition comprising:(a) polyethylene having a density equal to or less than 0.915 gram per cubic centimeter grafted with an unsaturated aliphatic diacid anhydride; and(b) magnesium hydroxide, the surface of which is untreated.

Abstract: A magnet wire of modified cross-section is electrically insulated by adhering thereto an insulation tape which does not require a high temperature adherance step. The insulation tape has a pressure-sensitive adhesive coating which, prior to application to the magnet wire, is covered by a release strip. Just prior to application of the insulation tape to the magnet wire, the release strip is removed from the tape to uncover the adhesive coating and allow pressure-sensitive bonding of the insulation tape to the magnet wire.

Abstract: A non-halogenated cable for use in an electronic system having a core which includes a transmission medium, the transmission medium being a metallic or optical fiber conductor having thereon an insulating layer of non-halogenated polyethersulfone polymer composition, and a non-halogenated jacket which enclosed the core and the transmission medium, said non-halogenated jacket being a single layer of insulating material.

Abstract: A high voltage connector is formed of a composite pultruded member that has an inner core including a plurality of high resistance electroconductive strands carried in a resin binder. The inner core is surrounded by an outer nonconductive shell, and extends from a laser cut end of the outer shell to a contact face. During formation of the contact using laser techniques, portions of the outer shell are removed to expose the inner core, the resin binder of the inner core may be removed, and the strands of the inner core may be fibrillated and patterned as desired. In one embodiment, the resistance of the strands of the inner core of the high voltage connector provide a load resistor for a circuit to which the connector may be connected.