Abstract: A fiber optic drop cable may include a buffer tube having a diameter between approximately 2.20 mm and approximately 3.20 mm to facilitate housing of at least twelve optical fibers. First and second strength rod may be respectively positioned on opposite sides of the buffer tube, and each strength rod may have a diameter between approximately 1.25 mm and approximately 2.10 mm. Additionally, a jacket may be formed around the buffer tube and the strength rods. The jacket may have an elongated cross-sectional shape with a major dimension between approximately 8.0 mm and approximately 9.5 mm and a minor dimension between approximately 4.0 mm and approximately 4.4 mm.

Abstract: Water-resistant optical fiber cables and associated methods for forming water-resistant optical fiber cables are provided. A cable may include an outer jacket that defines a cable core. At least one optical fiber may be positioned within the cable core and encapsulated within a suitable sheath, such as a buffer tube. Additionally, a plurality of discrete water swellable fibers may be loosely positioned within the cable to provide water-resistance for the at least one optical fiber.

Abstract: Cables including strength members that limit elongation of an outer jacket are described. A cable may include any number of transmission media, such as optical fibers, positioned within one or more cable cores or openings defined by an outer jacket. Additionally, at least one strength member may be in contact with the outer jacket. The at least one strength member may include central core or member and an external coating formed around or surrounding the central core. The external coating may be formed of one or more materials that limit elongation of the outer jacket to less than approximately 20 mm at temperatures up to approximately 70° C.

Abstract: A communication cable can comprise twisted pairs of electrical conductors for transmitting electrical signals and bundles of optical fibers for transmitting optical signals. The electrical signals and/or the optical signals can support voice and digital communication or data transmission. The twisted pairs can be disposed along a central axis of the communication cable. Each bundle of optical fibers can be disposed in a respective buffer tube. The buffer tubes can be arranged in a ring around the twisted pairs. The communication cable can be configured to manage strain on the optical fibers without subjecting the twisted pairs to deleterious tensile stress. The communication cable can include an outer jacket sized for insertion in a conduit running along a railway or other transportation line.

Abstract: A communication cable can comprise twisted pairs of electrical conductors for transmitting electrical signals and bundles of optical fibers for transmitting optical signals. The electrical signals and/or the optical signals can support voice and digital communication or data transmission. The twisted pairs can be encased in a gelatinous material and disposed along a central axis of the communication cable. Each bundle of optical fibers can be disposed in a respective buffer tube. The buffer tubes can be arranged in a ring around the twisted pairs. The communication cable can be configured to manage strain on the optical fibers without subjecting the twisted pairs to deleterious tensile stress. The communication cable can include strength rods embedded in an outer jacket, with the outer jacket sized for insertion in a conduit running along a railway or other transportation line.

Abstract: A drop cable supportable in a drop cable clamping assembly includes a conductive, non-conductive, or combination conductive and non-conductive core enclosed by an extruded cable jacket of thermoplastic material. The cable jacket has a flattened top surface and a flattened bottom surface, either or both of which is provided with a friction engaging surface consisting of indentations or projections formed by one or more rollers following extrusion of the cable jacket and operatively configured for engagement by a clamping surface of the clamping assembly.

Abstract: The present invention provides a communication cable buffer tube having a flexural modulus ranging from about 180 kpsi to about 280 kpsi.

Abstract: The present invention provides a communication cable buffer tube having a flexural modulus ranging from about 180 kpsi to about 280 kpsi.

Abstract: A communication cable for transmitting various communication signals. The cable comprises buffer tubes for optical fiber cables that are robust, crush resistant, flexible, and cost effective. To obtain these properties, the buffer tubes contain a polymeric mixture of high impact polystyrene and styrene-butadiene-styrene. The polymeric mixture for the buffer tubes may also contain crystalline polystyrene and/or acrylonitrile-butadiene-styrene.