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公开(公告)号：JPH11174296A
公开(公告)日：1999-07-02
申请号：JP34808097
申请日：1997-12-17
Applicant: SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
Inventor： KATSURAJIMA WATARU , SAKABE ITARU , TANAKA SHIGERU , AKIMOTO HIROYUKI
IPC: G02B6/46
Abstract: PROBLEM TO BE SOLVED: To provide an intermediate branching method capable of the intermediate branching of a pipe cable even in extremely cold outdoors. SOLUTION: A sheath 5 is cut off, press winding is removed and a pipe 1a is pulled down. A filling member 8 is inserted to an opened clearance and cable core fixing members 6a and 6b are tightened and fixed by a bind member 7. The buckling of a part fixed by the cable core fixing members 6a and 6b is prevented. Then, by using a sheath clamping member 9, the vicinity of an end part generated by cutting off the sheath 5 is clamped. By integrating the opposing sheath clamping members 9 through a frame member 14, the buckling of a cable core between the end part of the sheath 5 and the end parts of the cable core fixing members 6a and 6b is prevented.
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公开(公告)号：JPH09133814A
公开(公告)日：1997-05-20
申请号：JP28847795
申请日：1995-11-07
Inventor： SANO HIROAKI , ISHIKAWA HIROKI , TANAKA SHIGERU , HOKARI KAZUO , TOMINAGA MAKOTO
Abstract: PROBLEM TO BE SOLVED: To fix plural tubes at an aggregate type tube cable terminal through small operation with a small number of components by providing an inner clamp and an outer clamp, and a clamping member which clamps a tube layer in their gap. SOLUTION: At the terminal of an aggregate type tube cable 1, the jacket 2 is removed almost to specific length to expose tubes 3 circumferentially arrayed in >=1 layers. A center tensile strength body 4, the tubes 3 in the inner circumferential layer of the aggregate type tube cable l, and the tubes 3 in the outer peripheral layer are run through the center hole of the inner clamp 5, the gap between the inner clamp 5 and an intermediate clamp 7, and the gap between the intermediate clamp 7 and outer clamp 6 respectively, and a fixing screw 8 and a clamping screw 9 are turned up. The center tensile strength body 4 is fitted to the inner clamp 5 and the tubes 3 are fixed between the respective clamps according to the clamping force of the clamping screw 9.
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公开(公告)号：JPH09105843A
公开(公告)日：1997-04-22
申请号：JP26280495
申请日：1995-10-11
Applicant: SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
Inventor： SANO HIROAKI , ISHIKAWA HIROKI , TANAKA SHIGERU , FURUKAWA SHINICHI
IPC: G02B6/44
Abstract: PROBLEM TO BE SOLVED: To provide an optical which is superior in handling such as easy separation of the tension member and whose coated optical fiber has no elongation strain even when the tensile force is applied to a tension member and a sheath. SOLUTION: The optical cable is formed by arranging hole parts 3 where the tension member 1 and coated optical fiber 2 are stored in the rectangularly sectioned sheath 4 side by side along the width and forming cuts 5 in the top surface and reverse surface of the sheath 4 along the thickness. The coated optical fiber 2 is stored in the hole part 3 with extra length. When the optical cable is used without being hung, or when hanging intervals are short, the optical fiber does not extend, so the extra length need not be given specially.
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公开(公告)号：JPH08262298A
公开(公告)日：1996-10-11
申请号：JP6564095
申请日：1995-03-24
Applicant: SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
Inventor： ISHIKAWA HIROKI , SANO HIROAKI , TANAKA SHIGERU , HOKARI KAZUO , KAWADA OSAMU
Abstract: PURPOSE: To provide a holder for branching pipelines which is not affected by the external force applied on a juncture and obviates the occurrence of a bend below a prescribed value near the juncture. CONSTITUTION: A pipeline cable 1 is supported on a supporting wire 6 anchored to a pole, etc. One pipeline 2a of the pipeline cable 1 is cut at a branch point and is connected to a pipeline 8 for dropping by a pipeline connector 7. The supporting wire holding part 10 of the folder 9 for branching the pipelines is mounted to hold the supporting wire 6 therein. A pipeline connector 7 is placed on an L-shaped placing part 11a of the holder 11 for the pipeline and a U-shaped fitting 13 is passed through the holder 9 for branching the pipelines and is tightened by a nut 15. The supporting wire holding part 10 is tightened, by which the holder 9 for branching the pipelines is securely mounted to the supporting wire 6. The dropping pipeline 8 is regulated in shape and clamped by the bending guide 12 extending from the placing part 11a.
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公开(公告)号：JPH08262291A
公开(公告)日：1996-10-11
申请号：JP6078595
申请日：1995-03-20
Applicant: SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
Inventor： ISHIKAWA HIROKI , SANO HIROAKI , TANAKA SHIGERU , NIRASAWA NOBUMASA , MORITA KENJI , KAWADA OSAMU , HOKARI KAZUO
IPC: G02B6/44
Abstract: PURPOSE: To make it possible to take out desired coated optical fibers without allowing the other coated optical fibers to run out in the case an optical cable is branched in an intermediate part. CONSTITUTION: A spacer 1 has a tensile body 2 at its center and has plural grooves 3 of an S-Z slot type inverting in inscribing directions at a specified period on its circumference. The coated optical fibers 4 are housed in the respective grooves 3. The spacer 1 has adhesives 6 along the grooves in at least a part between the grooves on its outer peripheral surface. Wire-shaped bodies 5 are spirally wound apart spacings around the spacer 1 and are adhered thereto. The wire-shaped bodies 5a retaining the coated optical fibers 4a to be taken out are cut in the upper part of the grooves 3a, by which the taking out of the desired coated optical fibers 4a is made possible.
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Patent Agency Ranking
公开(公告)号：JPH08262287A
公开(公告)日：1996-10-11
申请号：JP6078695
申请日：1995-03-20
Applicant: SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
Inventor： ISHIKAWA HIROKI , SANO HIROAKI , TANAKA SHIGERU , HOKARI KAZUO , KAWADA OSAMU
IPC: G02B6/44
Abstract: PURPOSE: To provide a self-supporting type optical cable which prevents the generation of elongation strain in a coated optical fiber in spite of exertion of tensile force on a supporting wire and coating and prevents the transmission of a side pressure to the coated optical fiber in spite of exertion of the side pressure thereon. CONSTITUTION: This self-supporting type optical cable has a supporting wire 1, a coated optical fiber 2 and a coating 4. The coating 4 is formed of a material having flexibility and the external shape of its section is nearly rectangular and has the supporting wire 1 in the upper part thereof and a space part 3 in the lower part. The supporting wire 1 is tightly coated by the coating 4. The coated optical fiber 2 is housed into the space part 3 with a slightly longer extra length. The extra length rate thereof 13 set at about the same degree as the elongation strain that the self-supporting type optical cable receives.
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公开(公告)号：JPH08262238A
公开(公告)日：1996-10-11
申请号：JP6564195
申请日：1995-03-24
Inventor： SANO HIROAKI , ISHIKAWA HIROKI , TANAKA SHIGERU , HAYAMIZU SHIGEKAZU , NOZAWA MASARU , TOMINAGA MAKOTO
Abstract: PURPOSE: To reduce the size and cost of a connecting box and to simplify connecting operation. CONSTITUTION: A cable sheath 6 of a wiring optical cable l is removed at a branching point and a coated optical fiber 7 is taken out of a cable core 5. The coated optical fiber 7 and a coated optical fiber 8 taken out of an optical cable side for branching are fusion spliced. The coated optical fibers 7, 8 including the fusion spliced part 9 are housed into a coated optical fiber housing part 4 on a tray 3. Since the position of a connecting point may be any of the coated optical fiber housing part, the extra length considered to be necessary for connecting the coated optical fiber 7 and the coated optical fiber 8 is not needed. The branching part is kept protected by putting cases thereon from above or below or by other means.
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公开(公告)号：JPH0862471A
公开(公告)日：1996-03-08
申请号：JP19518594
申请日：1994-08-19
Applicant: SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
Inventor： ISHIKAWA HIROKI , SANO HIROAKI , TANAKA SHIGERU , HAYAMIZU SHIGEKAZU
IPC: G02B6/44
Abstract: PURPOSE: To provide an optical fiber coated fiber protecting tube which can facilitate the extraction of the optical fiber coated fiber from a branch part, and which can protect the branch part. CONSTITUTION: An optical fiber coated fiber protecting tube is formed of a substantially cylindrical plastic member, a spiral slot is formed extending throughout the overall length of the member, the spirally winding direction being changed at the center of the member. The outer covering 5 of an SZ optical fiber cable is removed (A); a winding inversion part 1b is caught (B); the optical fiber coated fiber protecting tube 4 is turned by one revolution so that it is wound around a spacer 2 in its entirely (C); A retaining winding 4 is pulled toward one side (D), the inversion part 1b is expanded manually so as to expose the insertion part 1b of the optical fiber core wire 3 to the outside (E); the optical fiber core wire protecting tube 1 is turned by one revolution, and the remaining part of the optical fiber coated fiber 3 is exposed to the outside (F); it is cut at a cutting point 6 (G); and it is connected to another optical fiber coated fiber.
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公开(公告)号：JPH07263778A
公开(公告)日：1995-10-13
申请号：JP5051194
申请日：1994-03-22
Applicant: SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
Inventor： NISHIMURA MASAYUKI , TANAKA SHIGERU , NAKAZAWA MASATAKA , KIMURA YASURO
IPC: G02B6/44 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/10 , H04B10/29 , H04B10/291 , H04B10/16 , H04B10/17
Abstract: PURPOSE:To arrange a light amplifying part without restriction in the environmental conditions and optimize the light transmitting characteristics by forming a first and second connecting parts by molding with a covering member and storing inside first and second optical fiber for transmission and optical fiber for amplification by integrating them. CONSTITUTION:A first connecting part which connects first optical fiber 60 for transmission with optical fiber 70 for amplification and a second connecting part which connects the optical fiber 70 for amplification with a second optical fiber 60 for transmission are formed by molding with a coating member, and the optical fiber are integrated and is stored inside. Thus, the optical fiber 70 for amplification can be discretionally arranged as a light amplifying part without restriction in the environmental conditions so as to optimize the light transmitting characteristics of the optical fiber cable 10. Since the light amplifying part is incorporated with the optical fiber cable 10, an extra repeating amplifier is not necessitated for each cable and the arrangement cost is reduced. Therefore, excellent signal characteristics are maintained in the optical fiber cable 10 and signal beams are transmitted at low cost.
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公开(公告)号：JPH07199013A
公开(公告)日：1995-08-04
申请号：JP35421693
申请日：1993-12-28
Applicant: SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
Inventor： SANO HIROAKI , TANAKA SHIGERU , HAYAMIZU SHIGEKAZU
Abstract: PURPOSE:To provide an optical cable having an excellent post-branching property and a method for laying the optical cable for the purpose of post-branching using this optical cable. CONSTITUTION:This optical cable is constituted by twisting plural optical fiber units 1 formed with primary sheaths having weatherability and tubes 6 to left- hand and right-hand lays around a tensile body 5 and coating the assembly with a secondary sheath 7. This secondary sheath 7 is provided with a score 8. The secondary sheath 7 is cut off from this score 8 and the tubes 6 are taken out and cut at the time of post-branching. The small number of fiber optical cable which is a size-reducing line is inserted therein and is merely required to be connected to other optical fiber in, for example, a connecting box. The other optical fiber units 1 are exposed at the post-branching point but are protected by the primary sheaths. The operation at the post-branching point is simple.
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