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公开(公告)号：US20210349280A1
公开(公告)日：2021-11-11
申请号：US17278025
申请日：2019-09-18
Applicant: FUJIKURA LTD.
Inventor： Rikimaru Takeda , Norihiro Momotsu
Abstract: An optical fiber protective unit includes: a reticulated tube having openings that are reticulately formed, the reticulated tube being configured to accommodate a plurality of optical fibers inserted through the reticulated tube; a tubular member disposed inside the reticulated tube, the tubular member being configured to accommodate the plurality of optical fibers through the tubular member; and a cylindrical member attached to an end part of the reticulated tube. The cylindrical member has an inner diameter that is larger than an outer diameter of the tubular member.
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公开(公告)号：US10459183B2
公开(公告)日：2019-10-29
申请号：US16175939
申请日：2018-10-31
Applicant: FUJIKURA LTD.
Inventor： Ryoichi Mitobe , Norihiro Momotsu
Abstract: An optical wiring unit includes a plurality of drawers with optical adapters. Each of the drawers includes a first latch part and a second latch part. When any of the drawers are drawn out to a predetermined position, the first latch part of a drawn-out drawer latches on the second latch part of an adjacent drawer to lock the drawn-out drawer to the predetermined position.
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公开(公告)号：US20180196214A1
公开(公告)日：2018-07-12
申请号：US15863372
申请日：2018-01-05
Applicant: FUJIKURA LTD.
Inventor： Katsushi Agata , Norihiro Momotsu , Terutake Kobayashi
IPC: G02B6/44
CPC classification number: G02B6/4471 , G02B6/4446
Abstract: A fiber arrangement member includes: a tubular housing that houses a plurality of optical fibers; and a plurality of guide portions extending from a first end in an axial direction of the housing toward side areas of the first end. The guide portions extend from the housing in different directions from each other crossing an axial line of the housing. The guide portions comprise guide grooves that house the optical fibers and communicate with an inner space of the housing. The grooves are open at sides of the grooves opposite to a second end in the axial direction of the housing on entire lengths in extending directions of the grooves. The grooves selectively house the optical fibers extended from the first end in the axial direction of the housing. The optical fibers housed in one of the grooves move into another of the grooves.
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公开(公告)号：US20180196211A1
公开(公告)日：2018-07-12
申请号：US15842276
申请日：2017-12-14
Applicant: FUJIKURA LTD.
Inventor： Katsushi Agata , Norihiro Momotsu
IPC: G02B6/44
CPC classification number: G02B6/443 , G02B6/44 , G02B6/4403 , G02B6/4472 , G02B6/4475 , G02B6/4486
Abstract: An optical fiber cord includes: a multi-fiber cord section that includes an outer cover that encloses an optical fiber unit where a plurality of coated optical fibers are gathered; a plurality of branch cord sections where the coated optical fibers are housed in branch tubes; and a branch protection section that includes an exterior member that covers a branch portion where the plurality of coated optical fibers are branched from the multi-fiber cord section toward the branch cord sections.
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公开(公告)号：US11579396B2
公开(公告)日：2023-02-14
申请号：US17278025
申请日：2019-09-18
Applicant: FUJIKURA LTD.
Inventor： Rikimaru Takeda , Norihiro Momotsu
Abstract: An optical fiber protective unit includes: a reticulated tube having openings that are reticulately formed, the reticulated tube being configured to accommodate a plurality of optical fibers inserted through the reticulated tube; a tubular member disposed inside the reticulated tube, the tubular member being configured to accommodate the plurality of optical fibers through the tubular member; and a cylindrical member attached to an end part of the reticulated tube. The cylindrical member has an inner diameter that is larger than an outer diameter of the tubular member.
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Patent Agency Ranking
公开(公告)号：US20190250331A1
公开(公告)日：2019-08-15
申请号：US16240208
申请日：2019-01-04
Applicant: FUJIKURA LTD.
Inventor： Katsushi Agata , Norihiro Momotsu
IPC: G02B6/255
Abstract: A reinforcement sleeve for connecting a plurality of optical fibers to each other by fusion splice includes: a base member; a cover member that sandwiches a fusion splice portion of the plurality of optical fibers between the cover member and the base member; a first adhesive layer disposed between the base member and the plurality of optical fibers; and a second adhesive layer disposed between the cover member and the plurality of optical fibers. A width of the reinforcement sleeve is defined by a reinforcement sleeve standard relating to a reinforcement sleeve, and a height of the reinforcement sleeve is 1/n of a height defined by the reinforcement sleeve standard, where n is an integer equal to or larger than 2.
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公开(公告)号：US10310203B2
公开(公告)日：2019-06-04
申请号：US15850785
申请日：2017-12-21
Applicant: FUJIKURA LTD.
Inventor： Katsushi Agata , Norihiro Momotsu
IPC: G02B6/44
Abstract: A grounding structure of an optical fiber cable that includes a sheath, a plurality of optical fibers housed in the sheath, and a first tension member and a second tension member embedded in the sheath so as to interpose the optical fibers therebetween in a radial direction includes: a conductive member that electrically connects a first extending portion of the first tension member and a second extending portion of the second tension member. The first extending portion and the second extending portion extends from an end portion of the sheath. A length of the second extending portion in a longitudinal direction of the optical fiber cable is greater than a length of the first extending portion in the longitudinal direction. The second extending portion is held by a tension member holding portion and is electrically connected to a grounding circuit.
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公开(公告)号：US10175438B2
公开(公告)日：2019-01-08
申请号：US15842276
申请日：2017-12-14
Applicant: FUJIKURA LTD.
Inventor： Katsushi Agata , Norihiro Momotsu
IPC: G02B6/44
Abstract: An optical fiber cord includes: a multi-fiber cord section that includes an outer cover that encloses an optical fiber unit where a plurality of coated optical fibers are gathered; a plurality of branch cord sections where the coated optical fibers are housed in branch tubes; and a branch protection section that includes an exterior member that covers a branch portion where the plurality of coated optical fibers are branched from the multi-fiber cord section toward the branch cord sections.
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公开(公告)号：US10725261B2
公开(公告)日：2020-07-28
申请号：US15774219
申请日：2016-05-31
Applicant: FUJIKURA LTD.
Inventor： Terutake Kobayashi , Norihiro Momotsu
Abstract: An optical fiber-cable branch member includes: a branch member main body; a cable fixing portion that holds and fixes an end portion of a jacket of an optical fiber-cable onto the branch member main body; and a tube fixing portion that fixes a plurality of protective tubes onto the branch member main body. The optical fiber-cable includes a first optical fiber core bundle and the jacket, and the jacket coats an outer circumference of the first optical fiber core bundle and includes a tension-resisting member buried in a cable longitudinal direction. The plurality of protective tubes cover and protect respective outer circumferences of a plurality of second optical fiber core bundles obtained by branching the first optical fiber core bundle extending from the end portion of the jacket.
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公开(公告)号：US20180329167A1
公开(公告)日：2018-11-15
申请号：US15774219
申请日：2016-05-31
Applicant: FUJIKURA LTD.
Inventor： Terutake Kobayashi , Norihiro Momotsu
IPC: G02B6/44
Abstract: An optical fiber-cable branch member includes: a branch member main body; a cable fixing portion that holds and fixes an end portion of a jacket of an optical fiber-cable onto the branch member main body; and a tube fixing portion that fixes a plurality of protective tubes onto the branch member main body. The optical fiber-cable includes a first optical fiber core bundle and the jacket, and the jacket coats an outer circumference of the first optical fiber core bundle and includes a tension-resisting member buried in a cable longitudinal direction. The plurality of protective tubes cover and protect respective outer circumferences of a plurality of second optical fiber core bundles obtained by branching the first optical fiber core bundle extending from the end portion of the jacket.
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