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21. 发明专利

JP2001264601A OPTICAL CABLE 失效
公开(公告)号：JP2001264601A
公开(公告)日：2001-09-26
申请号：JP2000075709
申请日：2000-03-17
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： SAKABE ITARU , SUETSUGU YOSHIYUKI , OTA JUNICHI , MAKIYAMA AKITO , HAKOZAKI HIROSHI , IWATA HIDEYUKI
IPC分类号： G02B6/44 , G02B6/46 , H01B7/18 , H01B11/00
摘要： PROBLEM TO BE SOLVED: To make the layable length of an optical cable within a conduit pipeline longer and to reduce the laying cost of a cable line by decreasing the coefficient of friction of the external coating layer of the optical cable. SOLUTION: The optical cable having the external coating layer formed by extrusion molding of straight chain low-density polyethylene admixture added with erucic acid in a range of >=300 to

22. 发明专利

JPH09171726A MARKING METHOD FOR CABLE 失效
公开(公告)号：JPH09171726A
公开(公告)日：1997-06-30
申请号：JP33028895
申请日：1995-12-19
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： OTA JUNICHI , HAMADA KAZUHIRO , SHOJI NOBORU
IPC分类号： H01B7/36 , H01B13/00 , H01B13/34
摘要： PROBLEM TO BE SOLVED: To apply an exact marking to the external cladding of a cable by passing a cable having a different radius, and a cable consisting of a suspension wire for hanger type aerial laying through a predetermined circumferential orbit. SOLUTION: When a cable 100 for aerial laying has deflection against a suspension wire, a marking is applied on the external cladding of the cable 100 by means of a marking device 1. Where, external cladding (3) is simultaneously applied to the cable 100 and the suspension wire in the production process. In this case, an exact marking is applied by a passage on a predetermined circumferetial orbit 2 having a radius of curvature R with a range of from 0.9(D-(1+α)d)/α to 1.1(D-(1+α)d)/α, where, α = deflection rate of the cable 100; 2d = outside diameter of the suspension wire; 2D = outside diameter of the cable 100.

23. 发明专利

JPH08320426A SELF-SUPPORTING TYPE OPTICAL CABLE AND ITS PRODUCTION 失效
公开(公告)号：JPH08320426A
公开(公告)日：1996-12-03
申请号：JP12787995
申请日：1995-05-26
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HAMADA KAZUHIRO , YASUI MASATOSHI , OTA JUNICHI
IPC分类号： G02B6/44
摘要： PURPOSE: To provide a process for producing a self-supporting type optical cable capable of easily producing the self-supporting type optical cable with which the elongation strain of coated optical fibers is prevented when tension is applied at a low cost. CONSTITUTION: A cable core 7 is directly supplied to a coating device 15. A hanging wire 1 is applied with the tension set according to the tension to be applied on the hanging wire 1 at the time of aerially laying the wire and is then supplied to the coating device 15. The hanging wire 1 and the cable core 7 are formed with a common coating having a neck part 5c by extrusion molding in the coating device 15 and are thereafter led out. The wire and the cable core are supplied to a cooling tank 17 where the coating layer is solidified by rapidly cooling and the self-supporting type optical cable 20 is formed. The self-supporting type optical cable 20 is taken up on a coiler 19 via a capstan 18.

24. 发明专利

JPH08313772A PRODUCTION OF SELF-SUPPORTING TYPE OPTICAL CABLE 失效
公开(公告)号：JPH08313772A
公开(公告)日：1996-11-29
申请号：JP12131395
申请日：1995-05-19
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： ISHIKAWA HIROKI , TANAKA SHIGERU , HAMADA KAZUHIRO , SUETSUGU YOSHIYUKI , OTA JUNICHI
IPC分类号： G02B6/44
摘要： PURPOSE: To provide a process for producing a self-supporting type optical cable of which the optical cable body has a slack with respect to a supporting wire. CONSTITUTION: A wheel 6 has two wheels 6a, 6b which are integrated to each other by commonly having one shaft 7 and substantially vary in outside diameters. The supporting wire 1 is wound around the supporting wire side wheel 6a and the optical cable body 3 is wound around the optical cable body side wheel 6b and is then introduced into an extruder 8. At this time, the ratio of the outside diameter of the supporting wire side wheel 6a of the wheel 6 and the optical cable body side wheel 6b is set, by which the arbitrary selection of the slack quantity of the optical cable body 3 is made possible. The supporting wire 1 and the optical cable body 3 are integrally coated with a synthetic resin which is a coating material in the extruder 8. Both are then taken as the self-supporting type optical cable 9 out of the extruder 8.

25. 发明专利

JPH08211267A PRODUCTION OF SELF-SUPPORTING TYPE OPTICAL CABLE 失效
公开(公告)号：JPH08211267A
公开(公告)日：1996-08-20
申请号：JP1578695
申请日：1995-02-02
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： ISHIKAWA HIROKI , SANO HIROAKI , TANAKA SHIGERU , NIRASAWA NOBUMASA , MORITA KENJI , OTA JUNICHI
IPC分类号： G02B6/44
摘要： PURPOSE: To provide a process for producing a self-supporting type optical cable which increases a wire speed when applying with a common sheath and improves productivity. CONSTITUTION: Supporting wires 3 and an optical cable ore 4 are covered and integrated with the common sheath 5 continuous in a longitudinal direction. Since the length in the vertical direction of a neck part 5a changes periodically in the longitudinal direction of the self-supporting type optical cable, the optical cable core 4 has a extra length with the supporting wires 3 in a tensionless state. The part of the neck part 5a is easily deformed and the distance between both is changed in the state of applying tension on the supporting wires 3 and, therefore, the generation of elongation and distortion on the optical cable core 4 and the application of a compressive stress thereon do not arise. Then, the coated optical fibers 6 are prevented from elongating and meandering within the slots of the optical cable core 4 regardless of before or after the tension application.

26. 发明专利

JPH0765640A SMALL DIAMETER TYPE OPTICAL FIBER UNIT FOR OPTICAL COMPOSITE OVERHEAD/UNDERGROUND CABLE 失效
公开(公告)号：JPH0765640A
公开(公告)日：1995-03-10
申请号：JP23087793
申请日：1993-08-24
申请人： SUMITOMO ELECTRIC INDUSTRIES , KANSAI ELECTRIC POWER CO
发明人： OTA JUNICHI , SATANI HIROSHI , KUNO SATOSHI , MASAMI YUUICHI , SAITO KOJI , KUME YUJI , KASHIWABARA YOSHINAGA
IPC分类号： G02B6/44 , H01B5/08 , H01B11/22
摘要： PURPOSE:To provide an optical composite overhead/underground cable accomodating a plurality of coated optical fibers by providing a small dia. type optical fiber unit to be used for an optical composite overhead/ground cable. CONSTITUTION:Optical fibers 1 covered with urethane acrylate ultraviolet curing resing are stranded with a center member interposed and they are integrated with a primary cover 3 to form an integrated unit 4. A plurality of integrated units 4 are stranded around a tensile strength body 5 covered with a cover 6 while the integrated units 4 and the body 5 are tightened in the axial direction by a heat resistant thin wall tape 7 to improve accomodation density. With the cover 3 the fibers 1 in the units 4 are protected from the outside.

27. 发明专利

JPH0626940A METHOD AND DEVICE FOR MEASURING TEMPERATURE DISTRIBUTION 失效
公开(公告)号：JPH0626940A
公开(公告)日：1994-02-04
申请号：JP18235392
申请日：1992-07-09
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： WAKAMI TOSHINORI , OTA JUNICHI , OKAMOTO KAZUHIRO , TAMANO KENJI
IPC分类号： G01J1/02 , G01K11/12
摘要： PURPOSE:To precisely measure temperature distribution. CONSTITUTION:In this system, detected intensities of Stokes light and anti- Stokes light are sampled at a sampling interval according to the spectral refractive index of an optical fiber, and the distance to a scattering point is determined on the basis of the principle of OTDR to measure temperature distribution. This system is formed of a measuring device 102 and an arithmetic display device 103. The measuring device 102 is optically connected to an optical fiber 101 to be measured to emit a light PL to the optical fiber 101, and outputs the temperature distribution data of the optical fiber 101 by a rear scattered light PB to the arithmetic display device 103. The arithmetic display device 103 conducts the display of the temperature distribution and the detection of time change and abnormally high temperature.

28. 发明专利

JPH05340824A 失效
公开(公告)号：JPH05340824A
公开(公告)日：1993-12-24
申请号：JP14722192
申请日：1992-06-08
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： WAKAMI TOSHINORI , OTA JUNICHI
IPC分类号： G01K3/00 , G01K11/12
摘要： PURPOSE:To obtain a temperature distribution measuring instrument having high measurement accuracy. CONSTITUTION:Exciting light from a pulsed light source 14 is split into two parts having equal power through a coupler 12 and the split parts are respectively supplied to fibers 18 and 28 extended in parallel in an area to be measured for temperature. When the intensity ratio between Stokes light and anti-Stokes light returning from the fibers 18 and 28 is found at every time-domain as a signal intensity ratio from which the background component is eliminated, the temperature distribution in the area to be measured for temperature can be found. Since not only the Raman back scattered light returning from the fiber 18 but also the Raman scattered light returning from the fiber 28 can be measured, a sufficient light quantity can be secured for the detection of a detector 16 and the temperature measurement accuracy of this temperature distribution measuring instrument can be improved.

29. 发明专利

JPH05113347A TRANSDUCER 失效
公开(公告)号：JPH05113347A
公开(公告)日：1993-05-07
申请号：JP30224491
申请日：1991-10-22
申请人： SUMITOMO ELECTRIC INDUSTRIES , OSAKA GAS CO LTD
发明人： OTA JUNICHI , WAKAMI TOSHINORI , OKAMOTO KAZUHIRO , INAMURA EIICHI , NAKAYAMA KATSUYOSHI
IPC分类号： G01D5/353 , G01D5/26
摘要： PURPOSE:To realize a transducer which can highly accurately set a generated loss by means of a single sensor. CONSTITUTION:A load roller 2 and an auxiliary roller 3 are integrally fixed and provided so that they can move vertically, while they are displaced depending on a measured amount. They are constructed so that an optical fiber 1 can pass through a slit between both rollers, wherein they apply stress to the optical fiber 1 guided by a lower guide 4 to have a transmission loss generated. By replacing the load roller 2, rough adjustment of the generated loss is performed while adjustment of an interval with the lower guide 4 can perform fine adjustment of the generated loss.

30. 发明专利

JPH0467004A MANUFACTURE OF EXTRUDED MOLDING 失效
公开(公告)号：JPH0467004A
公开(公告)日：1992-03-03
申请号：JP17633690
申请日：1990-07-05
申请人： SUMITOMO ELECTRIC INDUSTRIES , EKUSERU TOKAI KK
发明人： OTA JUNICHI , SENBA KENICHI , ARAI KATSUZO , KITAGAWA YOZO
IPC分类号： G02B6/44 , B29C47/02
摘要： PURPOSE:To obtain the extruded molding which has neither a void nor an air bubble in its border surface by extruding a resin material to coat an FRP material after removing residual volatile elements from the FRP material by a heat treatment. CONSTITUTION:After the FRP material is treated thermally to remove the residual volatile elements in the FRP material, the FRP material is used as a core material and coated by extruding the resin material by a normal method. Namely, the surface of the core material 9 is treated thermally by a heating device 2 provided with a propane gas burner before the FRP material 9 mounted on a sending-out device is put in an extrusion die 5. The FRP core material 9 has its outer periphery coated with the resin material 14, fused in an extruder 4, in the extrusion die 5 by passing through the heating device 2 after the volatile elements in the core material 9 are removed. Consequently, neither the void nor the air bubble is generated in the border surface between the FRP core material and coating resin at the time of extrustion molding, and the extruded molding which has a beautiful surface outward shape and little variation in the external diameter is obtained.

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