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公开(公告)号：US20200073068A1
公开(公告)日：2020-03-05
申请号：US16610018
申请日：2018-05-09
Applicant: Fujikura Ltd.
Inventor： Shogo Shimizu , Akira Namazue , Go Taki , Ken Osato
Abstract: An optical fiber cable includes: a core; an outer filling disposed outside the core; and a sheath that covers the core and the outer filling. The core includes: optical fibers; an inner filling; and a wrapping tube that wraps the optical fibers and the inner filling. The outer filling and the inner filling absorb water.
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公开(公告)号：US20190391353A1
公开(公告)日：2019-12-26
申请号：US16481768
申请日：2018-02-06
Applicant: FUJIKURA LTD.
Inventor： Tomoaki Kaji , Kouji Tomikawa , Ken Osato
IPC: G02B6/44
Abstract: An optical fiber cable includes: a core; a sheath that accommodates the core therein; and a pair of tension members embedded in the sheath. The core includes: a plurality of optical fiber units that each includes a plurality of optical fibers; fibrous fillings that extend in a longitudinal direction in which the plurality of optical fiber units extends; and a wrapping tube that encloses the plurality of optical fiber units and the fibrous fillings. The core is interposed between the pair of tension members.
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公开(公告)号：US10345516B2
公开(公告)日：2019-07-09
申请号：US15301995
申请日：2015-04-28
Applicant: FUJIKURA LTD. , NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Yoshie Sajima , Kouji Tomikawa , Ken Osato , Masayoshi Yamanaka , Naoki Okada , Shinya Hamaguchi , Naoki Nakagawa , Yusuke Yamada , Hisaaki Nakane
Abstract: [Object] In an optical fiber cable including a plurality of optical fiber units each formed by tying optical fibers in a bundle, preferable water resistance is to be achieved without increasing an outer diameter of the optical fiber cable.[Solution] An optical fiber cable includes: a plurality of optical fiber units each including a plurality of optical fibers and a bundling member wound around an outer periphery of a bundle of the plurality of optical fibers, the bundling member having a surface to which a water-absorbent granular substance is detachably attached.
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公开(公告)号：US20190121042A1
公开(公告)日：2019-04-25
申请号：US16092952
申请日：2017-02-15
Applicant: FUJIKURA LTD.
Inventor： Naoto Ito , Ken Osato , Masayoshi Yamanaka
IPC: G02B6/44
Abstract: An optical fiber unit includes: an optical fiber bundle formed by bundling a plurality of optical fibers; and a plurality of bundling members. One bundling member of the plurality of bundling members is wound on an outer circumference of the optical fiber bundle in a length direction of the optical fiber bundle, while reversing a winding direction alternately, and is joined to another bundling member at a section where the winding direction is reversed. A ratio of a width of a cross-section of the bundling member to a thickness of the cross-section of the bundling member is smaller than 20.
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公开(公告)号：US09995896B2
公开(公告)日：2018-06-12
申请号：US15401374
申请日：2017-01-09
Applicant: FUJIKURA, LTD. , NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Akira Namazue , Ken Osato , Naoki Okada , Yusuke Yamada , Daisuke Kakuta , Hisaaki Nakane , Shinya Hamaguchi
IPC: G02B6/44
CPC classification number: G02B6/4404 , G02B6/2551 , G02B6/2555 , G02B6/3636 , G02B6/4403 , G02B6/4405 , G02B6/441 , G02B6/443 , G02B6/448 , G02B6/4482 , G02B6/4489
Abstract: Provided is an optical fiber ribbon capable of achieving higher density and reduction in diameter and accurately placing optical fibers in V-shape grooves in a fusion machine without failure. The optical fiber ribbon 1 includes three or more of optical fibers 2 arranged in parallel and connecting portions 3 connecting adjacent two optical fibers 2 together, the connecting portions 3 being intermittently provided in each of a ribbon longitudinal direction and a ribbon width direction. The connecting portions 3 are each formed in such a manner as to fill resin into a gap S formed between adjacent two optical fibers 2, and both surfaces of the respective connecting portions 3 are each formed into a recess having a concave shape curved toward a center of the gap S to separate from lines 4,5 each connecting contact points of the optical fibers 2 when being placed on a horizontal surface.
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Patent Agency Ranking
公开(公告)号：US20180106977A1
公开(公告)日：2018-04-19
申请号：US15567793
申请日：2016-09-02
Applicant: FUJIKURA LTD.
Inventor： Masatoshi Ohno , Daiki Takeda , Ken Osato
IPC: G02B6/44
CPC classification number: G02B6/4495 , G02B6/44 , G02B6/4433 , G02B6/4435
Abstract: An optical fiber cable includes: a cable main body including a core that includes optical fibers, at least a pair of tension members that face each other with the core interposed therebetween, and an inner sheath that covers the core and the tension members; a cylindrical outer sheath that accommodates the cable main body; a reinforcing sheet provided between the cable main body and the outer sheath; and a rip cord provided between the reinforcing sheet and the cable main body. The reinforcing sheet surrounds an entire circumference of the cable main body, the reinforcing sheet includes an overlapping portion in which portions of the reinforcing sheet overlap each other in a portion in a circumferential direction of the cable main body, and the reinforcing sheet is formed of a metal.
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公开(公告)号：US09541722B2
公开(公告)日：2017-01-10
申请号：US14889058
申请日：2014-04-28
Applicant: FUJIKURA LTD. , NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Yoshie Sajima , Takashi Matsuzawa , Mizuki Isaji , Ken Osato , Naoki Okada , Hisaaki Nakane , Yusuke Yamada , Daisuke Kakuta , Shinya Hamaguchi , Yukihiko Shibata
IPC: G02B6/44
CPC classification number: G02B6/4404 , G02B6/4495 , G02B6/4498
Abstract: An optical fiber ribbon includes a plurality of optical fiber cores arranged in parallel spaced from each other; and a tape forming member having a coating portion covering an outer circumference of the optical fiber cores, and a coupling portion, integrally formed with the coating portion, intermittently coupling adjacent optical fiber cores, wherein the coating portion has an opening portion to expose a part of surfaces of the optical fiber cores, and at least a part of the coating portion is continuous in a longitudinal direction of the optical fiber cores.
Abstract translation: 光纤带包括彼此平行布置的多个光纤芯; 以及具有覆盖光纤芯的外周的涂布部分的带形成部件和与涂覆部分一体形成的连接部分，间断地连接相邻的光纤芯，其中涂覆部分具有露出部分的开口部分 所述光纤芯的表面的至少一部分在所述光纤芯的长度方向上连续。
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公开(公告)号：US20250164733A1
公开(公告)日：2025-05-22
申请号：US18691772
申请日：2022-09-01
Applicant: Fujikura Ltd.
Inventor： Daiki Takeda , Ken Osato , Ryo Kuramitsu
Abstract: An optical fiber cable includes: a multi-core optical fiber including a cladding and cores in the cladding; and a piece of arrangement information associated with the multi-core optical fiber and with a core arrangement of the cores in a cross-section of the multi-core optical fiber.
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公开(公告)号：US20250026607A1
公开(公告)日：2025-01-23
申请号：US18715511
申请日：2023-02-03
Applicant: Fujikura Ltd.
Inventor： Naoya Maehara , Go Taki , Minoru Takahashi , Akira Namazue , Shengyang Luo , Ken Osato
Abstract: A cable accommodating body includes one or more cable bundles made of a wound cable and not having any winding core and one or more first containers accommodating the one or more cable bundles and having a first outlet and a second outlet through each of which the wound cable is pulled out from an inside of the one or more first containers.
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公开(公告)号：US20240329348A1
公开(公告)日：2024-10-03
申请号：US18580021
申请日：2022-04-19
Applicant: Fujikura Ltd.
Inventor： Shogo Shimizu , Soichiro Kaneko , Akira Namazue , Ken Osato
IPC: G02B6/44
CPC classification number: G02B6/4433 , G02B6/449
Abstract: An optical cable includes optical fiber units each including a bundle of optical fibers. The optical fiber units are twisted together in an S-Z configuration in which a twisting direction of the optical fiber units is reversed at a reversal part and an adjacent reversal part adjacent to the reversal part. A twisting angle, by which the optical fiber units are twisted in a circumferential direction between the reversal part and the adjacent reversal part, is 540 degrees or greater.
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