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公开(公告)号：US20240302620A1
公开(公告)日：2024-09-12
申请号：US18289247
申请日：2021-05-31
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Masashi KIKUCHI , Shigekatsu TETSUTANI , Yusuke YAMADA , Akira SAKURAI , Hiroaki TANIOKA
IPC: G02B6/44
CPC classification number: G02B6/4482
Abstract: An optical fiber cable according to the present disclosure includes a cable core having one or a plurality of optical fiber core wires therein; an outer cover which covers the cable core and has a concave portion or a plurality of convex portions for an outer edge of a cross section perpendicular to a long axis direction of the outer cover; and an impression which is marked on the concave portion or on a portion sandwiched between the plurality of convex portions of a side surface of the outer cover.
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公开(公告)号：US20230333340A1
公开(公告)日：2023-10-19
申请号：US18026845
申请日：2020-10-09
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Yuta MARUO , Akira SAKURAI , Yusuke YAMADA , Shigekatsu TETSUTANI , Hiroaki TANIOKA
CPC classification number: G02B6/441 , G02B6/38875
Abstract: An optical cable according to the present disclosure has a structure in which at least one or more optical fiber cores and an interposition that prevents optical fibers from coming into contact with each other are bundled by a bundle tape.
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公开(公告)号：US20240272394A1
公开(公告)日：2024-08-15
申请号：US18289763
申请日：2021-05-31
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Masashi KIKUCHI , Shigekatsu TETSUTANI , Yusuke YAMADA , Akira SAKURAI , Hiroaki TANIOKA
IPC: G02B6/44
CPC classification number: G02B6/443 , G02B6/4486
Abstract: An optical fiber cable according to the present disclosure includes: a cable core having a plurality of optical fiber core wires; a sheath covering the cable core; and at least two or more tension members, having warping ability outward from an axial center of a cable core, disposed inside the sheath along the cable core, and any one of the tension members is disposed at a position laying along a position of another of the tension members with the axial center of the cable core sandwiched between the positions.
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公开(公告)号：US20240248001A1
公开(公告)日：2024-07-25
申请号：US18289233
申请日：2021-05-31
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Yusuke YAMADA , Masashi KIKUCHI , Akira SAKURAI , Shigekatsu TETSUTANI , Hiroaki TANIOKA
IPC: G01M11/00
CPC classification number: G01M11/3109
Abstract: An object of the present invention is to provide an optical fiber testing method and an optical fiber winding device capable of appropriately reproducing the same lateral pressure and minute bending state in a test of an optical fiber as those in an optical cable.
In the optical fiber testing method according to the present invention, an optical fiber 51-2 of the second layer wound around a bobbin 12 is used as an object to be tested. Lateral pressure to the optical fiber 51-2 of the second layer is applied by an optical fiber 51-3 of the third layer. The lateral pressure is adjusted by a tension when the optical fiber 51-3 of the third layer is wound around the bobbin. In other words, since the lateral pressure is applied to the optical fiber to be tested from another optical fiber, the same lateral pressure and minute bending state as those in the optical cable can be reproduced.-
公开(公告)号：US20230314743A1
公开(公告)日：2023-10-05
申请号：US18009774
申请日：2020-06-16
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Yuta MARUO , Hiroaki TANIOKA , Shigekatsu TETSUTANI , Yusuke YAMADA , Akira SAKURAI
IPC: G02B6/44
CPC classification number: G02B6/443
Abstract: The object of the present disclosure is to provide an optical fiber cable having a large contact area with the bottom surface of a rectangular groove and easily bent in at least two directions, as compared to an optical fiber cable having a circular cross-sectional shape perpendicular to a long axis direction. Therefore, the optical fiber cable of the present disclosure has three or more flat side surfaces in the long axis direction and two or more axes each having a minimum moment of inertia of area with respect to neutral planes.
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Patent Agency Ranking
公开(公告)号：US20240352758A1
公开(公告)日：2024-10-24
申请号：US18682051
申请日：2021-09-01
Applicant: Nippon Telegraph and Telephone Corporation
Inventor： Soichi ISHIKAWA , Masaki WAKI , Hiroaki TANIOKA , Kenichiro YAMAZAKI , Kento BUNPHONG
IPC: E04H12/20
CPC classification number: E04H12/20
Abstract: In order to solve the foregoing problems, an object of the present invention is to provide a jig and a laying method capable of laying a branch wire which can avoid a contact with a house or passersby and eliminating an unbalanced load of a utility pole erected in a confined area.
According to the present invention, since a first member of the jig is connected to a distal end of the utility pole by an upper branch wire and a second member of the jig is connected to the ground by a lower branch wire perpendicular to the ground, the utility pole can be laid in a confined area while securing an attachment angle of the upper branch wire with respect to the utility pole and eliminating an unbalanced load of the utility pole. By securing an optimum separation distance between the utility pole and the lower branch wire, a risk of contact with a house or passersby can be reduced.-
公开(公告)号：US20240118152A1
公开(公告)日：2024-04-11
申请号：US17768187
申请日：2019-10-23
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Gen KOBAYASHI , Kazuya ANDO , Masaki WAKI , Ryoichi KANEKO , Hiroaki TANIOKA
Abstract: The present invention has an object of providing an arithmetic apparatus, a facility management method, and a program that make it possible to acquire current tension applied to outdoor structures in a short period of time and make a bearing determination. The arithmetic apparatus according to the present invention calculates the dip degree of a cable and a distance between poles from the 3D model data of the cable according to Math. C1 and calculates the tension of each cable between the poles from the dip degree, the distance between the poles, and the weight of the cable per unit length according to Math. C2 (when no wind blows) or Math. C4 (when wind blows). Further, the arithmetic apparatus according to the present invention calculates a combined load obtained by converting the tension and the load of the accessory of the poles into an arbitrary position on the poles according to Math. C3.
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公开(公告)号：US20230076354A1
公开(公告)日：2023-03-09
申请号：US17798112
申请日：2020-02-28
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Akira SAKURAI , Hiroaki TANIOKA , Hisashi IZUMITA , Yusuke YAMADA , Yuta MARUO
Abstract: To surely fix an optical fiber cable including a nonmetallic tension member in a closure without damaging the tension member and a core. An optical fiber cable holding device according to the present disclosure includes: a thin plate portion configured, by bending a rectangular thin plate in a length direction thereof into a shape of a rough circle, to hold an outer periphery of an optical fiber cable; a binding mechanism portion fixed on one end of the thin plate portion and configured to bind and fix the thin plate portion wound around the optical fiber cable; protrusion fitting holes provided on the other end of the thin plate portion wound around the optical fiber cable; and a band-diameter adjuster fixed to the binding mechanism portion, including a protrusion to fittable into each of the protrusion fitting holes, and configured to adjust a diameter of the rough circle by changing from one hole to another hole of the protrusion fitting holes to be fitted onto the protrusion.
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公开(公告)号：US20240288647A1
公开(公告)日：2024-08-29
申请号：US18570957
申请日：2021-06-18
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Akira SAKURAI , Hiroaki TANIOKA , Shigekatsu TETSUTANI , Yusuke YAMADA , Masashi KIKUCHI
IPC: G02B6/44
CPC classification number: G02B6/4431
Abstract: In order to achieve the above-mentioned object, an optical fiber cable according to the present disclosure includes an optical fiber core wire, a sheath covering the optical fiber core wire, three or more anti-tension members inside the sheath, arranged along a longitudinal axis of the optical fiber core wire, and a tear string having an outer periphery a part of which is located outside an outer circumscribed lines of outer peripheries of the three or more anti-tension members in certain cross-sections perpendicular to a longitudinal direction of the sheath, and a part of which comes in contact with an inner periphery of the sheath or is located inside the inner periphery of the sheath in a cross-section perpendicular to the longitudinal direction of the sheath.
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公开(公告)号：US20220237335A1
公开(公告)日：2022-07-28
申请号：US17615276
申请日：2019-06-03
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor： Masaki WAKI , Kazuya ANDO , Gen KOBAYASHI , Ryoichi KANEKO , Hiroaki TANIOKA
Abstract: An object of the present invention is to provide a facility state analysis apparatus, a facility state analysis method, and a program capable of extracting a pole having a high risk without an inspector visiting a site. The facility state analysis apparatus according to the present invention creates a pole model from a material characteristic, dimensions, and a structure model of a pole, highly accurately estimates, by using a finite element method, a facility state such as deflection and an inclination when tension by a separately created cable model is applied to the pole model, and visualizes strength remaining in a facility system.
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