Abstract: A telecommunications assembly including a housing and a plurality of modules mounted within the housing. The modules includes a rear face in which is mounted at least one fiber optic connector. Within an interior of the housing are positioned at least one fiber optic adapters. Inserting the module through a front opening of the housing at a mounting location positions the connector of the module for insertion into and mating with the adapter of the housing. The adapters within the interior of the housing are mounted to a removable holder. A method of mounting a telecommunications module within a chassis.

Abstract: A fire-resistant plenum-type electrical cable is provided that is insulated with an inner layer of a fluorocarbon containing polymer in contact with a surrounding electrical conductor, and an outer layer of abrasion-resistant polyvinyl chloride surrounding the inner fluorocarbon containing polymer layer. The inner layer of fluorocarbon containing polymer may be foamed.

Abstract: A fiber optic cable and method for making the cable includes a plurality of buffer tubes positioned around a central member with three levels of color coding to enhance identification of individual optical fibers within the cable. Each of the buffer tubes has a predetermined color for identifying each individual buffer tube from the other buffer tubes, and a plurality of optical fibers are positioned within each buffer tube and arranged in a plurality of optical fiber bundles within each buffer tube. Each optical fiber bundle includes a binder yarn surrounding respective ones of the optical fibers with each of the binders having a predetermined color for identifying each individual optical fiber bundle from the other optical fiber bundles within a respective buffer tube. In addition, each of the optical fibers has a predetermined color for identifying each individual optical fiber from other optical fibers within a respective optical fiber bundle.

Abstract: A communications system including an initially installed coaxial cable may be readily upgraded by installing a fiber optic cable therein. The coaxial cable has an empty longitudinal channel extending continuously along substantially the entire length thereof. A propellable fiber optic cable is later installed in the channel by a fluid flow which creates a sufficient drag to advance the fiber optic cable into the channel. The fiber optic cable is installed to meet increasing communications demands or when otherwise desired. The coaxial cable may include an empty electrically conductive tube serving as the center conductor for later receipt therein of the fiber optic cable. In other embodiments, the coaxial cable may have a channel provided in a dielectric material between the center and outer conductors, or a channel formed in the outer protective jacket.

Abstract: A coaxial cable of the type used for a drop cable for cable television includes flat reinforcing wires forming a reinforcing covering for a foil shield. The coaxial cable includes an elongate center conductor, a surrounding dielectric material, and an outer conductor including the foil shield and the plurality of flat reinforcing wires forming the reinforcing covering for the shield. The flat reinforcing wires may be braided or may be wrapped to form a served covering. The flat wires are preferably sized to have a greater strength than conventional round wires. Therefore, a method for manufacturing the cable may advantageously include the steps of applying the flat wires and extruding an outer protective jacket continuously in tandem to thereby increase manufacturing efficiency.

Abstract: A method and apparatus for providing a talk path in a longitudinal cavity of an enhanced crush, impact, and cut-through resistant communications cable. The talk path is especially suited for a fiber optic communications cable. The cable jacket is formed of a deformable material having a plurality of longitudinal cavities spaced about the cable core. A longitudinal cavity may contain a copper pair or optical fiber to serve as a talk path during servicing of the cable. The talk path may be readily accessed by a service technician without exposing the inner core or the communications cable.

Abstract: A cable and method for making such cable is disclosed. The cable is especially suited for high frequency applications in which electrical attenuation and dissipation factor are of critical importance. The cable comprises a tubular outer conductor, and at least one inner conductor for transmission of electrical signals. Between the inner and outer conductor is a foamed dielectric material. This dielectric is formed from the extrusion of an olefin polymer or a fluoropolymer with a blowing agent gas. Sulfurhexafluoride (SF.sub.6), rather than environmentally unsafe chlorofluorocarbons, is used as a blowing agent to foam the dielectric.

Abstract: A corrosion-resistant electric cable has a metallic conductor, a polymeric insulating jacket surrounding the metallic conductor, and a corrosion-inhibiting powder comprised of a hydrophobic material disposed between the metallic conductor and the insulating jacket. The corrosion-inhibiting powder may be comprised of a mixture of a hydrophobic fumed silica powder and a hydrophobic polyethylene powder.

Abstract: The cable shielding tape of this invention comprises a metal foil layer and a polymer supporting layer fusibly bonded directly to the aluminum foil layer and serving to structurally reinforce the foil layer. The polymer supporting layer comprises a polymer blend of a polyolefin component and an elastomeric component.

Abstract: Significantly enhanced bending characteristics are provided in a coaxial cable by reducing the stiffness of the tubular sheath in relation to the stiffness of the core. The cable comprises a core including at least one inner conductor and a low loss dielectric surrounding the inner conductor, and an electrically and mechanically continuous tubular metallic sheath closely surrounding the core and being adhesively bonded thereto, the ratio of the stiffness of the core to the stiffness of the tubular sheath being greater than 5.

Abstract: Disclosed is a coaxial cable having greatly improved mechanical and electrical properties derived from a foamed dielectric having a dielectric constant in the range of 1.32 to 1.1, such cable being provided by a novel method of coating a center conductor of the cable with a dielectric with an extruded cellular polyolefin base composition which has been rendered cellular by the direct injection of a blowing agent in a liquid form into the polymer during an extrusion process. Also disclosed is an apparatus and a method of continuous wire electropolishing and pre-coating.

Abstract: Disclosed is a coaxial cable having greatly improved mechanical and electrical properties derived from a foamed dielectric having a dielectric constant in the range of 1.32 to 1.1, a density between 0.1 and 0.29 grams per cubic centimeter, said foamed dielectric having dispersed throughout it undecomposed particles of a nucleating agent such cable being provided by a novel method of coating a center conductor of the cable with a dielectric with an extruded cellular polyolefin base composition which has been rendered cellular by the direct injection of a blowing agent in a liquid form into the polymer during an extrusion process.