Abstract: A dielectric system for coaxial electrical conductors is provided. The dielectric system separates an inner and outer conductor and is composed of a first layer of braided high tensile strength polymeric fluorocarbon filaments in an open weave surrounding the inner conductor. Surrounding the layer of braided filaments is a layer of cellular polyparabanic acid tape which is helically wound along the length of the cable with a negative overlap. Circumferentially surrounding these two layers along the length of the cable is a continuous layer of polymeric film which is in turn surrounded by a continuous layer of a crosslinkable polymeric lacquer.

Abstract: A telephone cord which is particularly suited for use with some models of decorative telephones includes a plurality of individually insulated conductors, a plastic jacket which encloses the plurality of individually insulated conductors, and a braid which encloses the plastic jacket. While the braid is comprised of a woven band of cloth of a natural material or a synthetic material, in a preferred embodiment it is made of cotton which is dyed to a color which is compatible with that of portions of the decorative telephone. An end portion of the cord which is terminated with a modular plug that is capable of being inserted into a jack in the telephone is treated to cause the braid to be bonded to the plastic jacket so that when the jacket is removed to expose the conductors for purposes of plug termination, the braid will not fray.

Abstract: An electrical conductor has a coating or layer of U-V cured material on the metallic conducting member. The ultra-violet cured coating is partially cured before application of pulp insulation. Further curing then produces a chemical bond between the ultra-violet cured coat and the pulp insulation to assist in holding the pulp on the conducting member. The conductor is economic to produce while providing an efficient moisture barrier between the pulp insulation and conducting member.

Abstract: A flame resistant insulated electrical wire and/or cable construction formed by wrapping a wire or cable conductor with a heat resistant flexible refractory tape comprising a porous base fabric, preferably a knit fiberglass fabric that has been coated and impregnated with refractory materials. These refractory materials are bonded to both the surface and interstices of the base fabric by means of a bonding agent, such that the fabric remains flexible and retains its stretch properties. In the presence of relatively extreme temperature and heat (e.g., above 1750.degree. F.), the bonding agent will decompose without flaming, while the refractory materials will fuse into the softened surface of the knit fiberglass base fabric forming a high temperature resistant structure with ceramic qualities and insulative properties.

Abstract: An electric cable and in particular a coaxial cable, said cable having at least one conductor surrounded by electrical insulation and at least one longitudinal strength member formed by a cord of aromatic polyamide fibres, disposed parallel to the conductor or twisted in a helix therearound. Various kinds of cords are described: twisted; non-twisted; in one or in several layers; embedded in insulation or constituting the insulation.

Abstract: An electric cable for communication purposes, for instance a one-pair party station cable which is designed as twin cable and includes a cross-section-wise relatively flat envelope or cover of thermoplastics or elastomers and includes conductors arranged in spaced relationship to each other and also includes traction relief members in about the middle between the conductors. The traction relief members are embedded in the envelope or cover and are adapted to exert the traction forces exerted on the cable in the longitudinal direction thereof. The traction relief members include high-strength fibers arranged symmetrically with regard to the longitudinal central plane of the cable and with regard to the conductors. The enveloping substance includes thermoplastics or elastomers.

Abstract: Resins, made by admixing polyacrylic resin and epoxy resin in a weight ratio of polyacrylic:epoxy of 10:0.1 to 100 are cured in a diffusion gas atmosphere. An insulated conductor is coated with the polyacrylic-epoxy resin and cured without heat in a contacting gas atmosphere, such as nitrogen, carbon dioxide, argon, helium, methane, or hydrogen.

Abstract: In the production of electric cable in an extruder head having undulated tension relief elements embedded in the jacket, the jacketing material and tension relief elements are introduced at a velocity greater than the cable core, with such velocity being subsequently decreased to provide a compressive force which forms the undulations.

Abstract: A method of coating conductors with polyvinyl formal dissolved in a solvent comprising certain monoalkyl ethers of diethylene glycol and triethylene glycol or the monophenyl ether of ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol or propylene glycol. In some cases it is necessary to have a diluent such as an aromatic hydrocarbon present.

Abstract: An insulated electrical conductor comprising a core carrying an inner coating of heat resistant material and a uniform outer coating of fused polymeric material forming a smooth pin-hole free surface.

Abstract: A method of producing an insulated electrical conductor, in which a wire conductor is coated with an inner layer of heat resistant material and covered with electrostatically deposited powdered polymeric material which is fused by heat to form an outer layer of insulation. An insulated electrical conductor produced by this method comprises a core carrying an inner coating of heat resistant material and an outer coating of fused polymeric material.

Abstract: Polyvinyl formal dissolved in a solvent comprising certain monoalkyl ethers of diethylene glycol and triethylene glycol or the monophenyl ether of ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol or propylene glycol. In some cases it is necessary to have a diluent such as an aromatic hydrocarbon present.

Abstract: Electrical wire and cable suitable for use in nuclear generating stations, having at least one electrical conductor, a micaceous insulating layer surrounding the conductor and a layer of fluoropolymer insulation surrounding the micaceous layer.

Abstract: A radiation resistant cable is made by wrapping a barrier film over a conductor and covering it with a silicone saturated asbestos covering. The asbestos is passed through one or more dies to compact the asbestos covering and accurately size it. One or more layers of polyimide tape is wrapped about the asbestos. The polyimide tape is covered by a heat-sealable tape over which a fiberglass cover is braided. The cable is then heated to seal the heat-sealable tape to itself as well as to the adjacent layers. The cable is then passed through a coating bath to impregnate and saturate the fiberglass braid, following which the cable is heated to extract the solvent in the coating solution.

Abstract: A hermetic lead wire for use in conducting electricity to a motor in a hermetically sealed system such as a refrigeration system is formed with an electrically wound, laminated flexible foil tape surrounding an internal stranded conductor. The laminated tape is formed with an inner nonwoven fibrous layer of polyester fibers for interlocking with the conductor when melted by a hot stripping tool. An outer impervious foil layer of polyester on said laminated tape provides a dielectric shield for the wire. Preferably, the laminated tape is helically wound about the conductor and is covered with an outer flexible braided sheath of polyester filaments.

Abstract: A composite tape insulation for use in winding onto electrical conductors to be further processed for installation in an electrical machine comprises an internal insulation structure having a layer of glass cloth or polyester fleece and a layer of fine mica impregnated with a cured synthetic resin such as an epoxide resin, and outer facing layers of a synthetic material such as a polycarbonate resin bonded to opposite sides of the internal insulation structure by the impregnating resin.

Abstract: An insulated cable core is sheathed in polyolefin. The polyolefin for instance sheath of polyolefin for instance contains parallel non impregnated glass fibers which are undulated to improve mechanical bonding with the sheath.

Abstract: An elongated wrapper which is initially flexible and which, when wrapped around one or more bodies, is adapted to be stretched and assume a substantially rigid condition. The wrapper has an outer, elongated, tubular, elastic envelope assembly which is of a generally flat cross section and which is adapted to surround one or more bodies while being longitudinally stretched and wrapped around the bodies. This envelope assembly has an inner surface carrying one of a pair of materials which, when they combine, react to assume a hardened condition. The other of these materials is situated in the interior of the envelope assembly and is separated from the one of the pair of materials by a separating layer structure which is located in the envelope assembly between the pair of materials separating them from each other to prevent them from combining.

Abstract: A binding tape is made by coating a ribbon having glass fibers in the fill direction and a flexible, thermally stable fiber in the warp direction, with a swellable resin composition and removing the excess composition. The tape is lap-wound over an electrical conductor which is then immersed in solventless resin under pressure. The conductor is removed from the solventless resin and the tape prevents the solventless resin from seeping out before it is cured.

Abstract: A telephone cord which is particularly suited for use with some models of decorative telephones includes a plurality of individually insulated conductors, a plastic jacket which encloses the plurality of individually insulated conductors, and a braid which encloses the plastic jacket. While the braid is comprised of a woven band of cloth of a natural material or a synthetic material, in a preferred embodiment it is made of cotton which is dyed to a color which is compatible with that of portions of the decorative telephone. An end portion of the cord which is terminated with a modular plug that is capable of being inserted into a jack in the telephone is treated to cause the braid to be bonded to the plastic jacket so that when the jacket is removed to expose the conductors for purposes of plug termination, the braid will not fray.