公开(公告)号：US09261664B2

公开(公告)日：2016-02-16

申请号：US14453088

申请日：2014-08-06

Applicant: FUJIKURA LTD.

Inventor： Kouji Tomikawa ,  Naoki Okada ,  Daiki Takeda ,  Masayoshi Yamanaka

IPC: G02B6/44 ,  H01B3/30 ,  H01B3/44 ,  H01B7/295 ,  H01B7/288

CPC classification number: G02B6/443 ,  G02B6/4494 ,  H01B7/288

Abstract: There is provided an optical fiber cable having a configuration in which a strand core of optical fibers is housed in a sheath and capable of fulfilling sufficient mechanical characteristics and ensuring a predetermined watertight property. The optical fiber cable includes a strand core 1 including a plurality of optical fiber strands 11 and watertight material strings 12, a tape body 2 covering the strand core 1, and a cylindrical sheath 5 covering the strand core 1 and the tape body 2, wherein the tape body 2 has water permeability, and the watertight material strings 12 are dissolved in water when the water permeates through the tape body 2, and the dissolved watertight material passes through the tape body 2 and flows into the sheath 5.

Abstract translation: 提供了一种光纤电缆，其具有将光纤的绞线芯容纳在护套中并且能够实现足够的机械特性并确保预定的防水性能的构造。 光纤电缆包括：包含多个光纤线束11和水密材料串12的线束芯1，覆盖绞线芯1的带体2和覆盖绞线芯1和带体2的圆筒状护套5，其中 带体2具有透水性，并且当水渗入带体2时，水密材料柱12溶解在水中，并且溶解的水密材料通过带体2并流入护套5。

公开(公告)号：US20240288646A1

公开(公告)日：2024-08-29

申请号：US18569834

申请日：2022-03-08

Applicant: Fujikura Ltd.

Inventor： Daisuke Hikima ,  Shinnosuke Sato ,  Daiki Takeda ,  Ken Osato

IPC: G02B6/44

CPC classification number: G02B6/4431 ,  G02B6/4432 ,  G02B6/4479

Abstract: An optical fiber cable includes a core including optical fibers and a wrapping member that wraps the optical fibers, a sheath housing the core, and a rip cord disposed between the core and the sheath. A recessed portion is recessed inward in a radial direction of the core in the wrapping member. At least a portion of the rip cord is disposed inside the recessed portion.

公开(公告)号：US20190094473A1

公开(公告)日：2019-03-28

申请号：US16125937

申请日：2018-09-10

Applicant: FUJIKURA LTD.

Inventor： Daiki Takeda ,  Shigeo Takahashi

IPC: G02B6/38

CPC classification number: G02B6/3887 ,  G02B6/3816 ,  G02B6/3846 ,  G02B6/3891 ,  G02B6/3898

Abstract: A clamp member includes: a body part that includes a fiber insertion hole where an optical fiber is inserted and a hole for tension member where a tension member is inserted; and an anchoring screw that fixes the tension member to the body part. The clamp member is fixed to an end of an optical cable that includes the optical fiber and the tension member, and the clamp member is fixed to and housed in an outer housing of an optical connector.

公开(公告)号：US10087027B2

公开(公告)日：2018-10-02

申请号：US14915480

申请日：2014-09-24

Applicant: FUJIKURA LTD.

Inventor： Daiki Takeda ,  Masashi Ohno ,  Satoru Shiobara ,  Masayoshi Yamanaka ,  Naoki Okada

IPC: B65H21/00

Abstract: To make a tape length that can be supplied at one time long, and to make it possible to directly supply a tape from a record wound tape.A tape supplying method of this invention includes: connecting a tape end to an outer side of one record wound tape of a first record wound tape and a second record wound tape and a tape end to an inner side of another record wound tape, by matching a surface and a rear surface of the tapes; and after the connecting, supplying a tape of the first record wound tape and the second record wound tape from a tape end of the first record wound tape to an opposite side of a side that has been connected to the second record wound tape.

公开(公告)号：US10061096B2

公开(公告)日：2018-08-28

申请号：US15116889

申请日：2014-10-03

Applicant: FUJIKURA LTD.

Inventor： Daiki Takeda ,  Tomoaki Kaji ,  Satoru Shiobara ,  Masayoshi Yamanaka ,  Naoki Okada

IPC: G02B6/44

CPC classification number: G02B6/4433 ,  G02B6/449 ,  G02B6/4497

Abstract: [Problem] The thickness on a ripcord in a circular optical cable is reduced, to improve workability.[Solution] An optical cable of the present invention includes: an optical fiber unit including optical fibers; a sheath, having a circular external form, configured to house the optical fiber unit in a housing portion; and two strength members embedded in the sheath; and two rip cords, wherein when a direction of connecting the two strength members sandwiching the housing portion is a first direction and a direction intersecting the first direction is a second direction, in a cross section of the optical cable, a cross-sectional shape of the housing portion has a dimension in the second direction greater than that in the first direction, and the two rip cords is disposed to sandwich the optical fiber unit such that a direction of connecting the two rip cords is in the second direction, in the cross section of the optical cable.