Patent application number | Description | Published |
20100247045 | METHOD FOR EXTRUSION-MOLDING LOOSE TUBE AND APPARATUS THEREFOR, AND LOOSE TUBE - An extrusion-molding apparatus for a loose tube includes: an extrusion head that includes a tip and a die concentrically arranged therewithin and extrudes a tube between the tip and the die; a needle that feeds at least one optical fiber and filler to be filled around the optical fiber into the tube being extrusion-molded; and a cylindrical bundling member provided within the needle. The bundling member has a bundling hole being smaller than an inner diameter of the tube at a center thereof and into which the optical fiber can pass through, and a flow pass penetrating along a feeding direction of the filler between the bundling hole and an inner circumferential surface of the needle. In an extrusion molding method using the extrusion-molding apparatus, the optical fiber is passed through a bundling hole to be bundled at an almost center of the tube. In addition, filler is passed through a flow path to be filled around the optical fiber. | 09-30-2010 |
20110002588 | OPTICAL FIBER CABLE AND METHOD OF MID-SPAN ACCESS THEREOF - An optical fiber cable is comprised of: a slotted core ( | 01-06-2011 |
20120020632 | OPTICAL FIBER CABLE AND LAYING METHOD THEREOF - An optical fiber cable includes an elongated optical element portion having an optical fiber, a pair of tensile strength members and an outer jacket. The optical fiber is composed of one or more plastic coated optical fibers, tight-buffered optical fibers or optical ribbon fibers. The pair of tensile strength members is arranged in parallel at both sides of the optical fiber in a width direction of the optical fiber. The outer jacket covers outer circumferences of the optical fiber and the pair of tensile strength members. A frictional coefficient of the outer jacket is equal to or less than 0.20. Shore D hardness of the outer jacket is equal to or more than 60. | 01-26-2012 |
20120237176 | OPTICAL FIBER CABLE - An optical fiber cable includes: a slotted core which houses and holds an optical fiber in a rectilinear slotted groove disposed along a longitudinal direction of the cable; a cylindrical sheath covering the entire slotted core; a rectilinear hanger line integrally provided continuously to the sheath; and a rectilinear tension member mounted in the slotted core. The tension member is located in a region having an angle about the cable center line within a predetermined value with respect to a plane including a center line of the suspension wire and the cable center line. | 09-20-2012 |
20130028563 | OPTICAL FIBER RIBBON, OPTICAL FIBER CABLE, AND WIRE CONFIGURATION - An optical fiber ribbon includes: a plurality of optical fibers arranged in parallel; and a tape material covering the plurality of optical fibers into a tape, in which the plurality of optical fibers are coated respectively with translucent color layers of different colors, and in at least two of the plurality of optical fibers, markings for identifying the optical fiber ribbon are provided at a same position in a longitudinal direction of the optical fiber ribbon. | 01-31-2013 |
20130156390 | MANUFACTURING METHOD OF OPTICAL FIBER RIBBON, MANUFACTURING DEVICE FOR OPTICAL FIBER RIBBON IMPLEMENTING SAID MANUFACTURING METHOD, AND OPTICAL FIBER RIBBON MANUFACTURED WITH SAID MANUFACTURING METHOD - A manufacturing method for an optical fiber ribbon, in which: a plurality of optical fibers are arranged in parallel and the neighboring optical fibers are partially coupled with each other at given intervals in a longitudinal direction to form a subunit; and the optical fibers positioned at side edges of the neighboring subunits are partially coupled with each other at a given intervals in the longitudinal direction, includes: sending out the optical fibers in a parallel manner with intervals provided therebetween, applying an uncured resin to the optical fibers, continuously changing positions at which the uncured resin is interrupted by a plurality of interrupt members, and forming coupled portions at which the optical fibers are coupled to each other by irradiating resin curing energy, wherein a moving period or phase of the interrupt members is changed for every arbitrary optical fibers. | 06-20-2013 |
20130309398 | METHOD FOR EXTRUSION-MOLDING LOOSE TUBE AND APPARATUS THEREFOR, AND LOOSE TUBE - An apparatus with: an extrusion head with a tip and a die concentrically arranged therewithin and extrudes a tube between the tip and the die; a needle that feeds at least one optical fiber and filler to be filled around the optical fiber into the tube being extrusion-molded; and a cylindrical bundling member provided within the needle. The bundling member has a bundling hole smaller than an inner diameter of the tube at a center thereof and into which the optical fiber can pass through, and a flow pass penetrating along a feeding direction of the filler between the bundling hole and an inner circumferential surface of the needle. In a method using the apparatus, the optical fiber is passed through a bundling hole to be bundled at a center of the tube. The filler is passed through a flow path to be filled around the optical fiber. | 11-21-2013 |
20130343712 | OPTICAL FIBER TAPE CORE WIRE MANUFACTURING METHOD, MANUFACTURING DEVICE, AND OPTICAL FIBER TAPE CORE WIRE AND OPTICAL FIBER CABLE MANUFACTURED WITH SAID MANUFACTURING METHOD - Provided is an method of manufacturing an optical fiber tape core wire with which, even when the optical fiber tape core wire is separated into optical fiber wires, it can be determined which optical fiber tape core wire each optical fiber wire is associated with. A fiber running length adjustment device | 12-26-2013 |
20140112631 | MANUFACTURING METHOD OF OPTICAL FIBER RIBBON, AND OPTICAL FIBER RIBBON MANUFACTURED BY THE MANUFACTURING METHOD - It is an object of the present invention to suppress a coating resin from being shaved off in an event where optical fibers are sent out from a coating dice. When a Young's modulus of ultraviolet curable resins | 04-24-2014 |
20150049997 | OPTICAL FIBER RIBBON AND OPTICAL FIBER CABLE HOUSING THE OPTICAL FIBER RIBBON - Provided is an optical fiber ribbon capable of concurrently ensuring mid-span access performance and cable production performance. The optical fiber ribbon | 02-19-2015 |