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1. 发明专利

JP2003227985A OPTICAL FIBER CABLE 审中-公开
公开(公告)号：JP2003227985A
公开(公告)日：2003-08-15
申请号：JP2002028519
申请日：2002-02-05
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE , SUMITOMO ELECTRIC INDUSTRIES
发明人： KOBAYASHI KAZUNAGA , KUSAKARI MASAHIRO , TANAKA YUKIAKI , OHASHI KEIJI , ANDO KIMIO , SAOTOME HIROYUKI
IPC分类号： G02B6/44 , H01B11/00
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber cable with a small diameter which has enhanced mechanical properties relating to optical loss, lateral pressure, lead wire preparation of coated optical fiber, etc. SOLUTION: The fiber cable 1 is composed of an optical fiber unit 7 in which a plurality of coated optical fibers 3 are covered all together with a unit sheath 5, a long cable sheath part 15 in which at least a pair of tensile strength bodies 11 parallel installed on both sides of the optical fiber unit 7 is covered with a cable sheath 13, and a cable-tearing notch part 17 which is arranged on both sides of the cable sheath part 15 in the longitudinal direction of the cable. Further, since the unit sheath 5 is made of a foaming resin, a buffer effect against an external stress and enhanced lateral pressure characteristics are obtained and the cable with a small diameter is realized. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2000098183A OPTICAL CONNECTOR 失效
公开(公告)号：JP2000098183A
公开(公告)日：2000-04-07
申请号：JP26646798
申请日：1998-09-21
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： ISHIDA HIDETOSHI , SAOTOME HIROYUKI , YOKOMACHI YUKIHIRO , KASHIHARA TSUGUJI
IPC分类号： G02B6/38 , G02B6/40
摘要： PROBLEM TO BE SOLVED: To provide an easy-to assemble optical connector from which a fear of disassembling of a housing by an external tension is eliminated. SOLUTION: An optical connector is assembled by pushing a push rod 2 from behind in the state in which an optical connector ferrule 3 is inserted into a casing 1. The push rod 2 is provided with a pair of latching pawls 2a, on which projecting latched parts 2b, 1st reception parts 2c, and 2nd reception parts 2d are formed. On the casing, latching recess parts 1b are formed. When the push rod 2 is pushed in, a pair of the latching pawls each are elastically deformed inside and inserted into the casing, and are released from the elastic deformation when the projecting latched parts reach the latching recess parts, and the projecting latched parts are latchingly engaged into the latching recess parts, and an end ring 4a of a coil spring 4 enter between a pair of the latching pawls and prevents them from being deformed inside again.

3. 发明专利

JPH10139289A PACKAGING STRUCTURE OF PEC CABLE WITH CLOSURE 失效
公开(公告)号：JPH10139289A
公开(公告)日：1998-05-26
申请号：JP30491396
申请日：1996-11-15
申请人： TATSUTA DENSEN KK , NIPPON TELEGRAPH & TELEPHONE , SUMITOMO ELECTRIC INDUSTRIES , FURUKAWA ELECTRIC CO LTD , FUJIKURA LTD , HITACHI CABLE , SHOWA ELECTRIC WIRE & CABLE CO , MITSUBISHI CABLE IND LTD
发明人： SHIBA YOSHIKI , HASHIMOTO KAZUO , SAOTOME HIROYUKI , MORIMOTO TOMOJI , MIYANO AKIO , KAWAMURA MASATAKA , TANAKA TOSHIYUKI , KAMAIKE SHINGO , KATSUYA TOSHIAKI , YUGAWA SHUNICHI
IPC分类号： B65H75/28
摘要： PROBLEM TO BE SOLVED: To facilitate the packing works with a winding frame on which a PEC cable fitted with a closure is to be wound and make smooth the pay-in operation of the cable termination into a manhole when the cable is to be laid. SOLUTION: Separators S are installed upright on the peripheral surface of the drum-(d) of a winding frame D intermittently in the centrifugal arrangement, and with them the area is partitioned into an accommodation zone Gs for a closure G mounted at the cable termination with which winding of the cable is to be started and a takeup zone P2 for the body of the cable P, and the closure G is fastened to the winding frame D in the closure accommodation zone Gs. Between the cable and the drum (d) of winding frame D, blocks 10 of soft nature are interposed so that a steep bending motive is not given to the cable P extending from the closure G at the outlet for the closure G and that the cable reaches the drum (d) in drawing a mild arc of circle.

4. 发明专利

JPH06201956A OPTICAL FIBER CABLE 失效
公开(公告)号：JPH06201956A
公开(公告)日：1994-07-22
申请号：JP35937192
申请日：1992-12-25
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： SAOTOME HIROYUKI , SAKATA YASUO , MATSUO TOSHINOBU , SATANI HIROSHI , UESUGI MIKIHIRO , KIYOSUE SHUSUKE
IPC分类号： G02B6/44
摘要： PURPOSE:To provide the optical fiber cable having a small diameter, high density, excellent transmission characteristic and high reliability by providing a coated optical fiber ribbon with a protective film, arranging tensile bodies on the same plane of the coated optical fiber ribbon and applying an external coating later integrally on the fiber ribbon and the tensile bodies. CONSTITUTION:This optical fiber cable is constituted by arranging the tensile bodies 3 consisting of steel wires, etc., in parallel apart a spacing on the same plane as the coated optical fiber ribbon 1 on both-sides of the coated fibers having a resin protective layer 2 consisting of a resin such as polyamide resin or BPT having >=50kgf/mm tensile strength formed on the outer periphery of the coated optical fiber ribbon 1 and integrally applying the external coating layer 4 of polyethylene, vinyl chloride, etc., on the coated fibers and the tensile bodies, respectively. The optical fiber cable may be otherwise constituted by arranging two lines of the coated fibers applied with the resin protective layers 2 on the outer peripheries of the coated optical fiber ribbons 1 in parallel keeping a space on the same plane, positioning the tensile body 3 between the respective coated fibers and integrally applying the external coating layer of an elliptic shape on these coated fibers and the tensile body.

5. 发明专利

JP2003227977A OPTICAL FIBER DROP CABLE 审中-公开
公开(公告)号：JP2003227977A
公开(公告)日：2003-08-15
申请号：JP2002028510
申请日：2002-02-05
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE , SUMITOMO ELECTRIC INDUSTRIES
发明人： KOBAYASHI KAZUNAGA , KUSAKARI MASAHIRO , TANAKA YUKIAKI , OHASHI KEIJI , ANDO KIMIO , SAOTOME HIROYUKI
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber drop cable having a fine diameter and in which mechanical characteristics such as optical loss, lateral pressure and lead wire preparability of coated optical fiber are enhanced. SOLUTION: The fiber drop cable 1 is provided with a long optical element part 19 consisting of an optical fiber unit 7 in which a plurality of coated optical fibers 3 are covered all together with a unit sheath 5, a long cable sheath part 15 which covers, with a cable sheath 13, at least a pair of first tension bodies 11 parallel installed to each other on both sides of the optical fiber unit 7, and a cable-tearing notch part 17 which is arranged on both sides of the cable sheath part 15. In addition, a long cable supporting part 23 covering a second tension body 25 with a sheath 27 is stuck parallel to each other to the optical element part 19 to form the fiber drop cable 1. Further, the unit sheath 5 is made of an expandable resin, thereby enhancing lateral pressure characteristic and enabling a fine diameter for the cable. COPYRIGHT: (C)2003,JPO

6. 发明专利

JP2003202471A OPTICAL FIBER CABLE 审中-公开
公开(公告)号：JP2003202471A
公开(公告)日：2003-07-18
申请号：JP2002219111
申请日：2002-07-29
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： YAMANO MASAYOSHI , TSURUMI TAKEO , SAOTOME HIROYUKI , TAKAHASHI TOSHIAKI , TANJI HISASHI , UJIIE SEIGO
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To expose a transmission medium immediately without leaving the transmission medium in one of pieces of a torn sheath when the transmission medium is taken out of the sheath by tearing the sheath of the cable from a notch that the sheath has. SOLUTION: The notch 5 is sectioned in a trapezoidal shape given a linear part so that the bottom of the notch is not pointed, and the groove bottom of the notch is made into a thin plane. The notch 5 is thus shaped and secondary coated optical fibers 2 of a ribbon are exposed once the sheath 4 is torn, so that good characteristics are maintained even in low-temperature environment. COPYRIGHT: (C)2003,JPO

7. 发明专利

JPH04349407A NON-HALOGEN FLAME-RETARDANT FLAT TYPE OPTICAL CABLE 失效
公开(公告)号：JPH04349407A
公开(公告)日：1992-12-03
申请号：JP15263591
申请日：1991-05-27
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： SAKATA YASUO , SAOTOME HIROYUKI
IPC分类号： G02B6/44
摘要： PURPOSE:To improve flexibility and to obviate the generation of harmful gases at the time of combustion by enclosing optical fiber cords with aluminum tapes having adhesive layers on both surfaces to adhere the fiber cords to the inside surfaces and coating the entire part with non-halogen flame-retardent polyethylene (PE). CONSTITUTION:Tensile fibers 2 are applied longitudinally along the outer periphery of a coated optical fiber 1 and further a sheath 3 consisting of PVC is applied on the outer periphery thereof to constitute the optical fiber cord. Two pieces of such optical fiber cords are prepd. and are housed into the recessed parts of the laminated aluminum tapes 4 which have a hollow shape in section, are disposed in parallel and have the adhesive layers on both surfaces. The optical fiber cords and the laminated aluminum tapes 4 are not adhered over the entire surface and are adhered and held in the state of line contact. These cords are then integrally coated with the non-halogen flame-retardent PE 5, by which the entire part of the cable is constituted.

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