Abstract:
An optical communication cable includes a core, armor surrounding the core, a jacket surrounding and bonded to the armor, and a binder film also surrounding the core and interior to the armor. The core includes buffer tubes surrounding sets of optical fibers and a central strength member. The buffer tubes are stranded around the central strength member in a pattern of stranding including reversals in lay direction of the buffer tubes and the binder film holds the buffer tubes in position. The binder film is bonded to an interior of the armor, thereby providing a quick access capability to access the core via simultaneous removal of the binder film when the armor and jacket are removed.
Abstract:
A recirculating powder applicator includes an applicator body having an inlet on an upstream surface and an outlet on a downstream surface, wherein the inlet and outlet define a passage that extends transversely through the thickness of the applicator body, a powder conduit, an air inlet, an exhaust aperture located on one of the upstream or downstream surfaces, and a circulation chamber located on the interior of the applicator body. The powder conduit and air inlet are in fluid communication with the passage and the passage is in fluid communication with the circulation chamber. A method of applying powder to a substrate during a continuous process includes using a recirculating powder applicator.
Abstract:
A fiber optic cable (110) includes a jacket (112), an element (114) of the cable (110) interior to the jacket (112), and first (120) and second (122) powders. The element (114) includes a first surface (124) and a second surface (126). The cable (110) further includes a third surface (128) interior to the jacket (112) and facing the first surface (124) at a first interface (132) and a fourth surface (130) interior to the jacket (112) and facing the second surface (126) at a second interface (134). At least one of the third (128) and fourth (130) surfaces is spaced apart from the jacket (112). The first powder (120) is integrated with at least one of the first and third surfaces (124, 128) at the first interface (132) and the second powder (122) integrated with at least one of the second and fourth surfaces (126, 130) at the second interface (134). The first interface (132) has greater coupling than the second interface (134) at least in part due to differences in the first and second powders.
Abstract:
A fiber optic cable includes a core assembly including an optical fiber and a tube through which the optical fiber extends, a polymeric sleeve surrounding the core assembly, water-swellable material integrated with the polymeric sleeve, and a jacket surrounding the polymeric sleeve. The polymeric sleeve is continuous peripherally around the core assembly, forming a continuous closed loop when viewed in cross-section, and continuous lengthwise along a length of the cable that is at least 10 meters. The water-swellable material is in the form of water-swellable powder, the particles of which are partially embedded in the polymeric sleeve such that a portion of the particles is submerged in the polymeric sleeve and another portion is exposed. Another fiber optic cable is disclosed, comprising a core assembly comprising an optical fiber and a polymeric sleeve surrounding the core assembly. The polymeric sleeve is continuous peripherally around the core assembly, forming a continuous closed loop when viewed in cross-section, and continuous lengthwise along a length of the cable that is at least 10 meters. The poylmeric sleeve comprises water-swelling segments extending lengthwise along the polymeric sleeve supporting water-swellable powder and bare segments between the water-swelling segments, the bare segments extending ardially aroud the full perimeter of the sleeve.
Abstract:
An optical communication cable (10) includes a cable body (12), a plurality of core elements (20,22, 24) located within the cable body, a reinforcement layer (30) surrounding the plurality of core elements within the cable body, and a film (28) surrounding the plurality of core elements. At least one of the plurality of core elements includes an elongate optical transmission element (18). The film (28) provides an inwardly directed force onto the core elements, and a surface of the film is bonded to the reinforcement layer.
Abstract:
An optical cable is provided. The optical cable includes a tubular, elongate body having an inner surface defining a cavity extending between first and second ends of the elongate body and an optical transmission element located with the cavity. The optical cable includes a coupling or bonding structure non-permanently and non-rigidly joining the outer surface of the optical transmission element to the elongate body at a plurality of periodic contact zones such that relative movement between the optical transmission element and the elongate body is resisted.
Abstract:
A fiber optic cable includes a core and a jacket surrounding the core. The jacket includes a base layer formed from a foamed material including a polymer. A surface layer of the jacket is formed from a second composition that differs from the first composition and also includes the polymer. An interface bonds the surface and base layers to one another.
Abstract:
A fiber optic cable (110) includes core elements (114), a composite film (126) surrounding the core elements (114), and a jacket (134) surrounding the composite film (126). The core elements (114) include one or more optical fibers (118) and at least one tube (116, 116') surrounding the one or more optical fibers (118). The composite film (126) includes a first layer (810, 812, 813) adjoining a second layer (810, 812, 813), where the composition of the second layer differs from the first. The composite film (126) is relatively thin, having an average thickness over a 10-meter length of the cable that is less than half an average thickness of the jacket (134) over the 10- meter length.
Abstract:
A fiber optic cable (910) includes core elements (914) wound in a pattern of stranding, the core elements (914) comprising tubes surrounding optical fibers. The fiber optic cable further includes an binder film (918) surrounding the stranded core elements (914). The binder film (918) is continuous peripherally around the core elements (914), forming a continuous closed loop when viewed in cross-section, and continuous lengthwise along a length of the cable that is at least a meter. Further, the binder film (918) is in radial tension and opposes outwardly transverse deflection of the core elements (914).
Abstract:
A fiber optic cable includes a cable core of core elements and a protective sheath surrounding the core elements, an armor surrounding the cable core, the armor comprising a single overlap portion when the fiber optic cable is viewed in cross-section, and a jacket surrounding the armor, the jacket having at least two longitudinal discontinuities extruded therein. A method of accessing the cable core without the use of ripcords includes removing a portion of the armor in an access section by pulling the armor away from the cable core so that an overlap portion separates around the cable core as it is being pulled past the cable core. A protective sheath protects the core elements as the armor is being pulled around the cable core.