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1. 发明专利

JP2001091797A OPTICAL FIBER CORD 失效
公开(公告)号：JP2001091797A
公开(公告)日：2001-04-06
申请号：JP26908999
申请日：1999-09-22
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE , TOYOKUNI DENSEN KK
发明人： YAMANO MASAYOSHI , SUETSUGU YOSHIYUKI , TACHIKURA MASAO , URUNO SHIGENORI , IZUMIDA CHIKASHI , TOMITA NOBUO , TAMURA HAJIME , NAGASE YOICHI , TSUCHIYA NOBUYUKI , OKABE YOSHIHISA
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber cord with which a finer diameter may be achieved and a non-halogen characteristic and fire-retardance are sufficiently excellent while having sufficient bending rigidity and transmission characteristic. SOLUTION: This optical fiber cord 1 has a coated optical fiber 11, a buffer fiber layer 12 covering the circumference of the coated optical fiber 11 and a sheath 13 (sheath member) covering the circumference of the buffer fiber layer 12. The sheath 13 is formed by laminating an inner layer 13a which consists of a first resin compsn. not containing a halogen element and has a Young's modulus of 80 to 150 kgf/mm2 and an outer layer 13b which consists of a second resin compsn. not containing the halogen element, has a Young's modulus of 5 to 50 kgf/mm2 and has the flame-retardance of a V-0 level in a UL-94 test.

2. 发明专利

JPH11248981A OPTICAL CABLE 失效
公开(公告)号：JPH11248981A
公开(公告)日：1999-09-17
申请号：JP6943398
申请日：1998-03-03
申请人： NIPPON TELEGRAPH & TELEPHONE , SUMITOMO ELECTRIC INDUSTRIES , TOYOKUNI DENSEN KK
发明人： NAKAO NAOKI , ENOMOTO TETSUYA , SUETSUGU YOSHIYUKI , NAKAJIMA KIYOSHI , TAMURA HAJIME , KODA KUNIHIKO
IPC分类号： G02B6/44 , H01B11/00
摘要： PROBLEM TO BE SOLVED: To prevent the part where multi-unit coated optical fibers are branched into optical fibers from becoming large and to stop the optical fibers from being drawn or bent by providing decentralized branch parts of the branch part. SOLUTION: An optical cable has 1st branch parts 10, 10b... and 2nd branch parts 13, 13b... where multi-unit ribbon coated optical fibers, 9, 9a... for connection are branched into optical fibers 11. At the 1st branch part 10, the multi-unit ribbon coated optical fibers 9 at the odd-numbered positions are branched into the optical fibers 11 at positions which are close to the root of a projection tension member 7 and close to a cable main body 1 and covered with protection materials 12 respectively. At the 2nd branch part 13, the coated fibers 9 at the even-numbered positions are branched into the optical fibers 11 at positions which are close to the center of the projection tension member 7 and covered with protection materials 12 respectively.

3. 发明专利

JPH09243884A OPTICAL FLAT CABLE 失效
公开(公告)号：JPH09243884A
公开(公告)日：1997-09-19
申请号：JP8335896
申请日：1996-03-12
申请人： NIPPON TELEGRAPH & TELEPHONE , TOYOKUNI DENSEN KK
发明人： NAGANA RIYUUICHIROU , NAGASE YOICHI , TAMURA HAJIME
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To facilitate the installation of work and terminal treatment and to prevent the damage or degradation of optical fibers by providing an optical flat cable with a tension member arranged to be parallel with both side parts of optical fiber ribbon cords. SOLUTION: The tension member 3 is so arranged as to exist in parallel with both side parts of the optical fiber ribbon cords 2. A sheath 4 covers the outer peripheral parts of the optical fiber ribbon cords 2 and the tension member 3 in such a manner that its outer peripheral part is formed to a nearly elliptic shape. Each optical fiber ribbon cord 2 has a coated optical fiber ribbon 8A formed by covering the outer peripheral parts of plural coated optical fibers 8 with a UV curing resin 8A in such a manner that the outer peripheral part is formed to an elliptic shape. The outer peripheral parts of the coated optical fibber ribbons 8A are coated with tensile fibers 9 in such a manner that the outer peripheral part is formed to a square shape of a rectangular shape. The outer peripheral parts of the tensile fibers 9 are covered with the sheath 10 for cords.

4. 发明专利

JPH09243883A OPTICAL FLAT CABLE 失效
公开(公告)号：JPH09243883A
公开(公告)日：1997-09-19
申请号：JP8335796
申请日：1996-03-12
申请人： NIPPON TELEGRAPH & TELEPHONE , TOYOKUNI DENSEN KK
发明人： NAGANA RIYUUICHIROU , NAGASE YOICHI , TAMURA HAJIME
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To make it possible to easily peel the sheath at the end of an optical flat cable without damaging optical fibers and without the applying of force thereon at the time of a terminal treatment by providing this optical flat cable with at least >=1 pieces of ripping grooves formed on the outer peripheral part of the sheath. SOLUTION: Optical fiber cords 3 are so arranged as to be parallel with both side parts of a tension member 2. The sheath 4 covers the outer peripheral parts of the optical fiber cords 3 and the tension member 2 in such a manner that its outer peripheral part is formed to an elliptic shape. The ripping grooves 5 are formed in the positions, which are the front and rear surface parts of nearly the central part of the sheath 4 and where the tension member 2 exists. The ripping grooves 5 are cut by pulling the sheath 4 at the end in a lateral direction in such a manner that the ripping grooves 5 can cut the sheath 4 at the end at the time of the terminal treatment. As a result, the easy taking out of the optical fiber cords 3 from the inside of the ripped sheath is made possible.

5. 发明专利

JPH09243877A COATED OPTICAL FIBER 失效
公开(公告)号：JPH09243877A
公开(公告)日：1997-09-19
申请号：JP8335996
申请日：1996-03-12
申请人： NIPPON TELEGRAPH & TELEPHONE , TOYOKUNI DENSEN KK
发明人： NAGANA RIYUUICHIROU , NAGASE YOICHI , TAMURA HAJIME
IPC分类号： G02B6/44 , G02B6/02
摘要： PROBLEM TO BE SOLVED: To produce a coated optical fiber capable of sufficiently satisfying an ironing characteristic, tensile characteristic, bending characteristic, temp. characteristic, side pressure characteristic, cost effectiveness, etc., by forming coating layers of two layers. SOLUTION: The coated optical fiber 1 is composed of an optical fiber 2, a UV curing resin layer 3 covering the outer peripheral part of the optical fiber 2 and a resin layer 4 covering the outer peripheral part of this UV curing resin layer 3. The coating layer 4 is composed of a first coating layer 5 which covers the outer peripheral part of the UV curing resin layer 3 and a second coating layer 6 which covers the outer peripheral part of the first coating layer 5 and is formed by using a material different form the first coating layer 5. The first coating layer 5 is formed by using a flexible thermoplastic resin, for example, polyvinyl chloride, having a Young's modulus of 5 to 100N/mm . The second coating layer 6 is formed by using a semi-rigid or rigid thermoplastic resin, for example, polyvinyl chloride, having a Young's modulus of 200 to 500N/mm .

6. 发明专利

JP2001201641A OPTICAL COMMUNICATION TRUNK CABLE AND REINFORCEMENT TUBE CABLE 失效
公开(公告)号：JP2001201641A
公开(公告)日：2001-07-27
申请号：JP2000008655
申请日：2000-01-18
申请人： TOYOKUNI DENSEN KK
发明人： TAMURA HAJIME , AKIZUKI FUMIHIRO , TAJIMA HIDEAKI , NONAKA KENJI
IPC分类号： G02B6/44 , G02B6/00
摘要： PROBLEM TO BE SOLVED: To obtain an optical communication trunk cable and a reinforcement tube cable to, which connection work is performed easily in a site comfortably and which can cope with the change of demand at each floor in a short time easily by simple work. SOLUTION: The optical communication trunk cable is composed of a tape slot type optical communication trunk cable main housing many optical fiber tapes being capable of wiring in a hanging state in a building, a plurality of branch wiring cables formed by taking out many of other optical fiber tapes except at least one of the tape slot type optical communication trunk cable main body, so that the optical wiring box at the necessary floor can be wired and by inserting them in the reinforcement tube of the reinforcement tube cable respectively, and a spare cable for coping with the variation of demand, which is formed by inserting at least one of the remaining optical fiber tapes which are taken out from the lower region or the arbitrary region of the tape slot type optical communication trunk cable main body, into the reinforcement tube of the reinforcement tube cable and arranging them along the tape slot type optical communication trunk cable main body.

7. 发明专利

JP2001147359A METHOD FOR WIRING OPTICAL COMMUNICATION CABLE, AND OPTICAL COMMUNICATION TRUNK LINE CABLE 失效
公开(公告)号：JP2001147359A
公开(公告)日：2001-05-29
申请号：JP33085699
申请日：1999-11-22
申请人： TOYOKUNI DENSEN KK
发明人： TAKAHASHI TAKEO , ITO KIMIO , HODOHARA MAKOTO , TAMURA HAJIME , AKIZUKI FUMIHIRO , TAJIMA HIDEAKI , NONAKA KENJI
IPC分类号： G02B6/44 , G02B6/46
摘要： PROBLEM TO BE SOLVED: To obtain a method for efficiently and reliably wiring an optical communication cable and an optical communication trunk line cable by enabling the optical communication cable even to be wired, even if hard work such as fusion splicing is not executed in site. SOLUTION: This method for wiring the optical communication cable is composed of an optical communication trunk line cable manufacturing process, where an optical communication trunk line capable main body which collects plural optical cords cut into a preset length which is wired to respective floors from the lower end part of a tension supporting wire, capable of being hung down from the upper part to the lower part of a building installed in a factory is formed, an MU simple ferrule is connected to the upper end part of the optical cord of the optical communication trunk line cable main body, and a connector is attached to plural optical cords at the lower end part, an optical communication trunk line cable suspending process for attaching the upper end part of the tension supporting wire of the optical communication trunk line cable to the ceiling section in the upper part of the building or the like to install it in the state of being hung downward, and an optical cord connecting process for connecting the connecting at the lower end part to a private cabinet and connecting the MU simple ferrule at the tip end part of plural optical cords to an optical wiring box installed in the floor.

8. 发明专利

JP2001147358A METHOD FOR WIRING OPTICAL COMMUNICATION CABLE, AND OPTICAL COMMUNICATION TRUNK LINE CABLE 失效
公开(公告)号：JP2001147358A
公开(公告)日：2001-05-29
申请号：JP33090599
申请日：1999-11-22
申请人： TOYOKUNI DENSEN KK
发明人： TAKAHASHI TAKEO , ITO KIMIO , HODOHARA MAKOTO , TAMURA HAJIME , AKIZUKI FUMIHIRO , TAJIMA HIDEAKI , NONAKA KENJI
IPC分类号： H01B11/00 , G02B6/46
摘要： PROBLEM TO BE SOLVED: To obtain an optical communication cable wiring method and an optical communication trunk line cable which are capable of wiring the optical communication cable even if hard work, such as fusion splicing is not executed in site and also capable of wiring a communication channel between upper floors and lower floors, with a simple work when needs are changed on respective floors. SOLUTION: This method for wiring the optical communication cable is composed of an optical communication trunk line cable installing process for installing in a building the optical communication trunk line cable, in which branching parts connected to a coated optical fiber capable of respectively connecting plural FO cables with a connector to respective floors wired in a suspended state from the upper floor to the lower floor passing through holes formed in respective floor surface are provided, a through-hole closing process for closing the through-holes, an FO cable wiring process for connecting SC connectors of the FO cables, respectively connected to connectors of the branching parts in respective floors to the SC connectors of optical wiring boxes in respective floors, and a demanded degree varying FO cable wiring process for connecting the FO cables in respective floors to the SC connectors of the optical wiring boxes in the upper and lower floors passing through the through-hole, as necessary.

9. 发明专利

JP2001116968A OPTICAL COMMUNICATION TRUNK CABLE AND BRANCHING TOOL FOR OPTICAL COMMUNICATION TRUNK CABLE 失效
公开(公告)号：JP2001116968A
公开(公告)日：2001-04-27
申请号：JP2000029561
申请日：2000-02-07
申请人： TOYOKUNI DENSEN KK
发明人： TAKAHASHI TAKEO , ITO KIMIO , IGARASHI TOSHIYUKI , HODOHARA MAKOTO , TAMURA HAJIME , AKIZUKI FUMIHIRO , TAJIMA HIDEAKI , NONAKA KENJI
IPC分类号： G02B6/44 , G02B6/00 , G02B6/46
摘要： PROBLEM TO BE SOLVED: To obtain an optical communication trunk cable and a branching tool for the optical communication trunk cable capable of wiring the optical communication cable by executing hard work such as welding and connecting in a factory and by using the branching tool for attaching with simple work in a job site and capable of being transferred in the same manner as a conventional one from the factory to the job site. SOLUTION: The optical communication trunk cable is composed of a connecting optical cable wherein sheathes in at least two or more prescribed positions of an optical communication trunk cable main body in which plural coated optical fibers or optical fiber tapes are covered with the sheath are removed in the factory and wherein a connector is attached to a tip end welded/connected with the taken-out coated optical fibers or the optical fibers tapes, a casing body which covers a base plate to which a connector connecting the connector of the connecting optical cable to the connector of an FO cable connected to an optical wiring box in the installing job site is attached and the optical communication trunk cable main body in the base plate section, and the branching tool consisting of a cover body which houses the base plate attached to the casing body so as to be attachable and detachable.

10. 发明专利

JP2001318284A OPTICAL COMMUNICATION TRUNK CABLE 失效
公开(公告)号：JP2001318284A
公开(公告)日：2001-11-16
申请号：JP2000137553
申请日：2000-05-10
申请人： TOYOKUNI DENSEN KK
发明人： TAMURA HAJIME , NAGASE YOICHI , NONAKA KENJI
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To obtain an optical communication trunk cable, from which a coated optical fiber tape can be easily fulled out of its inserting slot and wired to a connecting part in the case of branch wiring and from which a coated optical fiber tape in its inserting slot can be taken out arbitrarily. SOLUTION: The optical communication trunk cable consists of a trunk cable body, formed with plural optical cable inserting slots on the outer circumference in the center of which a tension member is imbedded, plural optical cables for which a resin coating is applied to plural coated optical fibers stored slidably inside the inserting slots of the trunk cable body, and a sheath formed via a tape bound restrainingly on the outer circumference of the trunk cable body.

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