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101. 发明专利

JPS6032161B2 失效
公开(公告)号：JPS6032161B2
公开(公告)日：1985-07-26
申请号：JP9234980
申请日：1980-07-07
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SATAKE TOSHIAKI , TACHIKURA MASAO
IPC分类号： G02B6/24 , G02B6/36

102. 发明专利

JPS6079306A DEVICE FOR REMOVING COVERING OF OPTICAL FIBER CORE 失效
公开(公告)号：JPS6079306A
公开(公告)日：1985-05-07
申请号：JP18796283
申请日：1983-10-07
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TACHIKURA MASAO , ARIOKA RIYOUSUKE
IPC分类号： G02B6/00 , H02G1/12
摘要： PURPOSE:To enable thorough removal of a covering from an optical fiber core even at a relatively wide space between blade edges by holding elastically the optical fiber core and exerting removing force to the covering by the inclined blade surfaces thereby preventing buckling deformation of the core and the positional deviation of the optical fiber. CONSTITUTION:When the end of an optical fiber core A to be removed of a covering 2 is positioned to the side of elastic bodies 71, 72 and when an upper member 51 and a lower member 52 are pressed to each other, the side face of the covering is supported by the bodies 71, 72 are therefore the covering is hardly buckled and deformed. While the force for removing the covering is exerted to the core A by pulling the core, compressive stress is applied to the slopes 91a, 92a of blades 81, 82 perpendicularly to said faces and the axial component (fx) thereof generates shearing stress to the surface of the fiber 1, thereby stripping the covering 2. The compressive stress component (fy) acting perpendicularly to the surface of the fiber 1 increases sharply when the blade edges approach to the fiber 1 surface to act in such a way that the fiber 1 parts from the blade edges. The covering 2 is thus cleanly removed without damage on the fiber 1.

103. 发明专利

JPS6079305A DEVICE FOR REMOVING COVERING OF OPTICAL FIBER 失效
公开(公告)号：JPS6079305A
公开(公告)日：1985-05-07
申请号：JP18796183
申请日：1983-10-07
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HAIBARA TADASHI , ARIOKA RIYOUSUKE , TACHIKURA MASAO
IPC分类号： G02B6/00 , G02B6/245 , H02G1/12
摘要： PURPOSE:To provide improvement in efficiency of a connecting operation and lessening of manpower and to prevent deterioration in strength in the juncture of optical fibers by removing the coverings of the fibers by using brushes formed of organic material, aminal or vegetable fibers or a fiber mixture composed thereof. CONSTITUTION:Rollers 6, 6' provided with brushes 5 rotated toward arrows A, A' by a motor 7. When optical fibers 2 removed of secondary coverings are inserted between the rollers 6 and 6' in this state, the primary covering and cushion layer are rubbed away by the brushes 5. The brush-like fibers can enter easily between the multicored fibers 2 as well and therefore the remaining coverings 3 between the fibers are rubbed away. Since the device is so constructed as to rub away the coverings of the fibers 2 by the soft brushes 5 in the above-mentioned way, the damage that the device gives to the fibers 2 is extremely less and the reliability in the juncture of the fibers 2 is considerably improved.

104. 发明专利

JPS5619017A OPTICAL FIBER CONNECTOR 失效
公开(公告)号：JPS5619017A
公开(公告)日：1981-02-23
申请号：JP9551679
申请日：1979-07-26
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TACHIKURA MASAO , NAGASAWA SHINJI
IPC分类号： G02B6/24 , G02B6/38
摘要： PURPOSE:To make work easier and make optical fiber connector of low losses possible by providing the same curvature in both end direction with the central point as a boundary within a pipe. CONSTITUTION:This connector consists in inserting optical fibers OF2 into insertion hole of a pipe structure formed by bending a pipe 1 of an inside diameter slightly larger than the outside diameter of the OF from both sides thereof respectively and butting these, wherein the insertion hole is curved and therefore the fibers are pressed to the same position in the central portion of the insertion hole in said hole by self-elastic force; consequently, the misalignment of the OF2 may be considerably decreased on account of the presence of a gap from the insertion hole 5 and the connection of low losses may be performed without any variance.

105. 发明专利

JPS5418761A END PART OF OPTICAL FIBER AND PRODUCTION OF THE SAME 失效
公开(公告)号：JPS5418761A
公开(公告)日：1979-02-13
申请号：JP8312777
申请日：1977-07-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TSUCHIYA HARUHIKO , HATAKEYAMA IWAO , TACHIKURA MASAO
IPC分类号： G02B6/36 , G02B6/38
摘要： PURPOSE:To achieve the increase in high accuracy and improvement in yield and workability by placing an optical fiber in the position having been set by using a master in a plug provided with a preworked datum level and fixing the same with plastic resin.

106. 发明专利

JPS53112756A OPTICAL FIBER CUTTING AND CONNECTING DEVICE 失效
公开(公告)号：JPS53112756A
公开(公告)日：1978-10-02
申请号：JP2695177
申请日：1977-03-14
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TACHIKURA MASAO , TSUCHIYA HARUHIKO
IPC分类号： B26F3/00 , B26F3/06 , C03B33/08 , G02B6/24
摘要： PURPOSE:To enhance the reliablity and workability of fusion connection and cut a desired portion highly accurately by disposing shield plates having an opening part between the cutting or connecting part of an optical fiber and heating sources thereby shielding the isolated portions.

107. 发明专利

JP2003232701A LIGHT RECEIVER FOR LIGHTING CABLE CORE AND METHOD FOR USING THE SAME 审中-公开
公开(公告)号：JP2003232701A
公开(公告)日：2003-08-22
申请号：JP2002032237
申请日：2002-02-08
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ARIMA MASAHIRO , TANAKA FUMIAKI , TACHIKURA MASAO
IPC分类号： G01M11/00 , G02B6/00 , H02G1/00 , H02G1/02 , H02G1/06
摘要： PROBLEM TO BE SOLVED: To provide a receiver which prevents communication quality in an L band from deteriorating when illuminating a cable core. SOLUTION: A light receiver 4 comprises a clamping recess 10, a clamping projection 15 consisting of a projection 15a and a side recess L15b and a side recess R15c at both the wings, and an attachment member L30 and an attachment member R35 for pressing and clamping an optical fiber cable core along with the clamping recess 10 and the clamping projection between the clamping recess 1 and the clamping projection 15. The light receiver 4 adjusts the position of the attachment member L30 and the attachment member R3, and changes the shape of curvature given to the optical fiber cable core, thus changing intensity in communication light and intensity in illumination light to be radiated to the outside of the optical fiber cable core, and specifying an optical fiber cable core 1 and upper and lower portions. COPYRIGHT: (C)2003,JPO

108. 发明专利

JP2000321471A OPTICAL CORD AND ITS PRODUCTION 失效
公开(公告)号：JP2000321471A
公开(公告)日：2000-11-24
申请号：JP13399199
申请日：1999-05-14
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： HONGO HITOYASU , SUETSUGU YOSHIYUKI , YAMANO MASAYOSHI , URUNO SHIGENORI , TACHIKURA MASAO
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To obtain a thin optical cord of aramid fibers (TM) having a smooth surface and uniform in diameter by binding integrated high tensile fibers, is particular aramid fibers (TM) with a resin or twisting the fibers as high tensile wires constituting an optical cord. SOLUTION: The optical cord comprises a core optical fiber, high tensile fibers and a jacket, the high tensile fibers are disposed along the coated optical fiber in an integrated state and the jacket is composed of polyamide resin or polybutyl terephthalate resin. The optical cord is cylindrically bound with this resin. In another embodiment, only the surface is bound with a UV-curing resin and the resin is not contained in the central part. The high tensile fibers may be twisted 1-2 times per 1 cm. The outside diameter of the jacket is 1.0-1.2 mm.

109. 发明专利

JP2000056176A OPTICAL CONNECTOR 失效
公开(公告)号：JP2000056176A
公开(公告)日：2000-02-25
申请号：JP21911498
申请日：1998-08-03
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HONDA RYUJI , NAGASE AKIRA , IWANO SHINICHI , KOBAYASHI MASARU , SUMITA MAKOTO , TACHIKURA MASAO
IPC分类号： G02B6/38
摘要： PROBLEM TO BE SOLVED: To provide an optical connector preventing careless connection release of connector/plugs each other and simplifying the structure of the connector/ plug. SOLUTION: Since a first connector/plug 20 arranged in a device external side is constituted so that a ferrule 20a isn't moved in the optical axial direction, and a second connector/plug 30 arranged in a device internal side is coupled to an adapter 10 by a coupling member 40, and the second connector/plug 30 is pressurized movably in the optical axial direction by the spring part 41 of the coupling member 40, even when tensility is applied to the first connector/ plug 20 due to contact with an external object, the pressing force of the second connector/plug 30 isn't injured.

110. 发明专利

JPH10282382A MANUFACTURE OF OPTICAL FIBER CORD, AND OPTICAL FIBER CORD 失效
公开(公告)号：JPH10282382A
公开(公告)日：1998-10-23
申请号：JP8504197
申请日：1997-04-03
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TACHIKURA MASAO , TAKEMOTO HAJIME , URUNO SHIGENORI , NAKANISHI ISAO
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To provide a method for improving the temperature characteristic of an optical fiber cord which is covered with the highly elastic material, and the optical fiber of smaller diameter using the method. SOLUTION: An optical fiber 4 is heated to mitigate the tensile stress residual in a covering in a condition where the displacement in the axial direction of the fiber of the covering is restricted after the outer covering is executed. After the covered optical fiber cord is wound around a highly rigid bobbin without slack, the optical fiber cord may be placed in a thermostatic chamber together with the bobbin, and kept at high temperature for the prescribed time. The bobbin may be heated to keep the optical fiber cord at high temperature for the prescribed time after the optical fiber cord is wound around the bobbin. In addition, the optical fiber cord after the extrusion covering process by the continuous manufacturing line may be heated for the prescribed time. The optical fiber cord 4 is of the structure where the tensile fiber is longitudinally attached around the optical coated fiber 1 of 0.25 mm in diameter and its outer side is covered with a polyamide resin.

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