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1. 发明专利

JPH04191713A OPTICAL FIBER CORE 失效
公开(公告)号：JPH04191713A
公开(公告)日：1992-07-10
申请号：JP32104990
申请日：1990-11-27
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON KINZOKU CO LTD
发明人： SANO HIROAKI , OTA JUNICHI , TANAKA SHIGERU , ONISHI TOSHIO
IPC分类号： G02B6/44
摘要： PURPOSE:To prevent damage of an optical fiber as well as simplifying work to take out the optical fiber to the utmost by providing slits along the longitudinal direction of the inner surface of a metallic conduit, and by opening the slits by way of applying lateral pressure from the side of this metallic conduit. CONSTITUTION:In the case when lateral pressure is applied on a metallic conduit 2 in the 180 deg. direction, deformation is small up to a specific amount of pressure, but if it exceed this specific amount of pressure, slit parts come to be in an open shape. When more pressure is added, large tearing strength is concentrated at the head edge of the slits, breaking of a fatigue part is caused and the conduit is torn at this part and opened. At this time, other parts keep a structure curved inward, and accordingly an optical fiber 1 is protected inside of this curved part and is never broken. Subsequently, if the slit parts are expanded outward by inserting a proper jig in the side of the conduit opened in this way, it is possible to take out an optical fiber core from the middle way of the metallic conduit without damaging the optical fiber core.

2. 发明专利

MY119709A OPTICAL FIBER CABLE 未知
公开(公告)号：MY119709A
公开(公告)日：2005-07-29
申请号：MYPI9600683
申请日：1996-02-27
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： OTA JUNICHI , HAMADA KAZUHIRO , SUETUGU YOSHIYUKI , SANO HIROAKI , ISHIKAWA HIROKI
IPC分类号： G02B6/44
摘要： ONE OR A PLURALITY OF REVERSE-LAY GROOVES (2) THE DIRECTION OF WHICH IS INVERTED PERIODICALLY ARE CUT IN THE OUTER CIRCUMFERENCE OF A SPACER (1), AND AN OPTICAL FIBER TAPE UNIT (3) OR A STACK OF OPTICAL FIBER TAPE UNITS (3) IS ACCOMMODATED IN THIS GROOVE (2). THE LENGTH OF THE DIAGONAL LINES OF THE OPTICAL FIBER TAPE UNIT (3) OR A STACK OF OPTICAL FIBER TAPE UNITS (3) IS LARGER THAN THE WIDTH AND DEPTH OF A BOTTOM PORTION (6) OF THE GROOVE (2). IN THE INVERTED PORTION (F1, F2) OF THE GROOVE (2), THE NORMAL VECTOR OF THE OPTICAL FIBER TAPE UNIT (3) OR THE STACK OF OPTICAL FIBER TAPE UNITS (3) POINTS TO A DIRECTION PERPENDICULAR TO AN OPENING DIRECTION OF THE GROOVE (2) IN THE INVERTED PORTIONS (F1, F2) OF THE GROOVE (2).

3. 发明专利

JP2002116356A COATED OPTICAL FIBER 失效
公开(公告)号：JP2002116356A
公开(公告)日：2002-04-19
申请号：JP2000310116
申请日：2000-10-11
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： OTA JUNICHI
IPC分类号： G02B6/44 , C03C25/10 , C03C25/24
摘要： PROBLEM TO BE SOLVED: To provide a coated optical fiber with a polyethylene resin coating which does not increase transmission loss because the inner face of the resin coating is made free from ruggedness by an increased coating rate. SOLUTION: The coated optical fiber is obtained by coating a glass fiber 11 with an ultraviolet-curing resin 12 and coating the resulting optical fiber with a polyethylene resin 14 and has an adhesive resin layer 13 comprising a polypropylene-base resin between the optical fiber and the polyethylene resin coating 14. An ethylene-ethyl acetate copolymer, an ethylene-vinyl acetate copolymer or a mixture of these is used as an adhesive resin.

4. 发明专利

JPH1152204A PRODUCTION OF FLAT TYPE CORD ASSEMBLED CABLE 失效
公开(公告)号：JPH1152204A
公开(公告)日：1999-02-26
申请号：JP20953497
申请日：1997-08-05
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： OTA JUNICHI , WATABE MASAKAZU , UJIIE SEIGO , NIIYAMA SHINSUKE
IPC分类号： G02B6/44 , H01B13/02
摘要： PROBLEM TO BE SOLVED: To prevent the unraveling of twists even if a cable is not subjected to retaining of bands, etc., at the time of cutting the cable by intertwining flat cords by aligning the twist direction when the flat cords are intertwined around a supporting wire with the releasing direction of torsional stress, thereby applying torsion on the flat cords. SOLUTION: While one or plural pieces of coated optical fibers 1a and one or plural pieces of wires 2b having torsional rigidity are paralleled and supplied to an extruder, the coated fibers and wires are coated by extrusion with coatings 2c of a flat type section consisting of a plastic resin, such as polyvinyl chloride in the production of the flat cords 2. At this time, the torsion is previously applied around the axial center on one or more wires 2b. In the case the torsion is applied on the plural wires 2b, the direction of the torsion is aligned. Steel wires, etc., are used for the wires 2b having the torsional rigidity. While the flat cords 2 having the internally existing torsional stresses are supplied from reels, the flat cords are intertwined around the supporting wire 1 without untwisting. The intertwining direction is aligned with the releasing direction of the torsional stresses.

5. 发明专利

JPH10170780A CABLE 失效
公开(公告)号：JPH10170780A
公开(公告)日：1998-06-26
申请号：JP32669396
申请日：1996-12-06
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： KATSURAJIMA WATARU , SUETSUGU YOSHIYUKI , OTA JUNICHI , MAKIYAMA AKITO , IWATA HIDEYUKI
IPC分类号： G02B6/44 , H01B11/22
摘要： PROBLEM TO BE SOLVED: To provide a cable that can be made small in diameter and circular when columnar members having different external diameters are put together around a center member. SOLUTION: Optical units 2 and 3 and a pipe 4 are put together around the center member 1. The optical unit 2 has a larger external diameter than the optical unit 3 and the pipe 4 has a small external diameter than the optical unit 3. The center member 1 has two hollows 1c and 1d formed as shown in (B), and the hollow 1c is deeper than the hollow 1d. The optical unit 2 is positioned in the hollow 1c and the optical unit 3 is positioned in the hollow 1d to make the circumferential shape of an assembly shown in (A) circular. A filler 5 is interposed, a pressure winding 6 is provided, and a sheath 7 is used for coating, thereby constituting the cable shown in (C).

6. 发明专利

JPH0943467A OPTICAL CABLE FOR AERIAL LAYING AND ITS PRODUCTION 失效
公开(公告)号：JPH0943467A
公开(公告)日：1997-02-14
申请号：JP19658695
申请日：1995-08-01
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： OTA JUNICHI , HAMADA KAZUHIRO , SHOJI NOBORU , ISHIKAWA HIROKI
IPC分类号： G02B6/44 , G02B6/48
摘要： PROBLEM TO BE SOLVED: To provide an optical cable for aerial laying which prevents the elongation of the coated optical fibers in an optical cable core, prevents infiltration of water and is good in productivity. SOLUTION: An optical cable core part 2 is sagged zigzag with respect to a supporting wire part 1 and the distance from this supporting wire part 1 to the optical cable core part 2 is long in the A-A' part having a separating part 4 and short in a B-B' part coupled by a neck part 3a. An aluminum tape is welded right on the outer periphery of the optical cable core longitudinally along this core to cover the optical cable core. This aluminum tape is a corrugated aluminum tape coated with a resin. The sectional secondary moment of the aluminum tape is diminished by the corrugation, by which the flexibility of the optical cable core coated with the aluminum tape is improved.

7. 发明专利

JPH06309951A OPTICAL FIBER COMPOSITE OVERHEAD GROUND-WIRE AND ITS MANUFACTURE 失效
公开(公告)号：JPH06309951A
公开(公告)日：1994-11-04
申请号：JP9782293
申请日：1993-04-23
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： OTA JUNICHI , KUNO SATOSHI
IPC分类号： G02B6/44 , H01B7/17 , H01B11/22
摘要： PURPOSE:To provide an optical fiber composite overhead earth-wire having water sucking function without use of any jelly. CONSTITUTION:An optical fiber composite overhead earth-wire concerned is equipped with a protection pipe of metal containing a conductor spacer provided with a groove, wherein a water sucking member 3 is furnished which is installed at the periphery of the spacer 1 in such a way that it is exposed partially. The protection pipe 2 touches directly the spacer portion exposed partially from the water sucking member 3, which causes the spacer 1 to be in electrical continuity to the protection pipe 2.

8. 发明专利

JPH052689A SENSOR CABLE 失效
公开(公告)号：JPH052689A
公开(公告)日：1993-01-08
申请号：JP18179791
申请日：1991-06-26
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： OTA JUNICHI , IWAMI TOSHINORI , OKAMOTO KAZUHIRO
IPC分类号： G08B13/12
摘要： PURPOSE:To make an optical fiber for a sensor into a cable and to supply a new sensor cable which can obtain detection output without cutting-off the optical fiber. CONSTITUTION:A spacer 2 of an elastic body having a helical channel 3 is provided around a tension member 1 and the optical fiber 4 is housed in the channel 3. The sensor cable is constituted by coiling a tension fiber 5 around the peripheral of the spacer 2 and by putting a sheath 6 around it. When the sensor cable is extended between supporters, etc., and added pushing force from a side by invaders, etc., the optical fiber 4 receives bending and generates the increase of loss. The invader can be detected by measuring the loss.

9. 发明专利

JPH04163807A OPTICAL FIBER COMPOSITE AERIAL GROUND WIRE 失效
公开(公告)号：JPH04163807A
公开(公告)日：1992-06-09
申请号：JP29030690
申请日：1990-10-26
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： OTA JUNICHI
IPC分类号： G02B6/44 , H01B7/17 , H01B7/18 , H01B11/22
摘要： PURPOSE:To suppress temperature rising and to prevent erosion and deformation by forming a spacer with a uniform insulating material in an optical fiber composite aerial ground wire having a spacer which holds the optical fibers in spiral grooves of the circumference. CONSTITUTION:Multiple grooves 2 are provided spirally in the circumference of a spacer 1 to hold optical fibers in the grooves. The outer circumference of the spacer 1 is covered by an aluminum pipe 4, then aluminum covering steel wires 5 are twisted to cover the pipe to form an optical fiber composite aerial ground wire. The spacer 1 can be formed by using uniform materials such as polycarbonate, polyether sulphone, polyether ketone and the like. Even a short-circuit current flows through the aerial ground wire, therefore heating of the spacer 1 is suppressed, decomposition of the optical fiber cover is prevented and erosion due to influence of electric field can be prevented.

10. 发明专利

JPH03231205A STRESS-IMPARTED OPTICAL FIBER FOR SENSOR 失效
公开(公告)号：JPH03231205A
公开(公告)日：1991-10-15
申请号：JP2619890
申请日：1990-02-07
申请人： SUMITOMO ELECTRIC INDUSTRIES , OSAKA GAS CO LTD
发明人： WAKAMI TOSHINORI , OTA JUNICHI , INAMURA EIICHI , NAKAYAMA KATSUYOSHI
IPC分类号： G01D5/353 , G01D5/26 , G01L1/24 , G02B6/02 , G02B6/036
摘要： PURPOSE:To arrange many sensors close to one another by providing a first core having a higher refractive index than a clad and a second core having a higher refractive index than the first core. CONSTITUTION:A measuring device 3 for detecting light transmission loss is positioned at one end of an optical fiber 4, and a sensor part 5 as the detection part is set in the middle of the optical fiber 4. A clad 8 forms the periphery of the optical fiber 4, an injection core 6 made of a material having a higher refractive index than the clad 8 is formed, and a detection core 7 made of a material having a higher refractive index is formed in parallel with the injection core 6. Consequently, the dead zone generated by the turbulence of an optical waveguide mode is shortened, and hence the sensor parts 5 are set close to one another.

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