Patents by Inventor Masayuki Ishioka
Masayuki Ishioka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11921336Abstract: An optical fiber protective unit includes: a reticulated tube; and a tubular member that is inserted through the reticulated tube and that is configured to accommodate a plurality of optical fibers. The reticulated tube is disposed on an outer periphery of the tubular member in a state folded in a longitudinal direction. Both end parts of the reticulated tube are located on the outer periphery of the tubular member.Type: GrantFiled: November 8, 2022Date of Patent: March 5, 2024Assignee: Fujikura Ltd.Inventors: Go Taki, Masayuki Ishioka, Mizuki Isaji, Tomoaki Kaji, Soichiro Kaneko, Koji Tomikawa, Akira Namazue, Ken Osato
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Publication number: 20230365378Abstract: A housing unit includes: a linear material; and a housing body that houses the linear material. In the housing body, winding regions in which the linear material is wound are disposed in a circumferential direction. The linear material is wound in a figure eight in a first region pair constituted by a pair of the winding regions. The linear material is wound in a figure eight in a second region pair constituted by a pair of the winding regions that are different from the winding regions constituting the first region pair.Type: ApplicationFiled: September 7, 2021Publication date: November 16, 2023Applicant: Fujikura Ltd.Inventors: Takafumi Sato, Masayuki Ishioka, Ryo Inagaki, Ken Osato
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Publication number: 20230178972Abstract: A bundling suspension wire includes: a suspension wire that includes a supporting wire and a coat coating the supporting wire; a hanger member that is suspended from the suspension wire and into which a cable is configured to be inserted; and wire threading cords that are inserted into the hanger member.Type: ApplicationFiled: February 16, 2021Publication date: June 8, 2023Applicant: Fujikura Ltd.Inventors: Go Taki, Ryo Inagaki, Ken Osato, Masayuki Ishioka
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Publication number: 20230053868Abstract: An optical fiber protective unit includes: a reticulated tube; and a tubular member that is inserted through the reticulated tube and that is configured to accommodate a plurality of optical fibers. The reticulated tube is disposed on an outer periphery of the tubular member in a state folded in a longitudinal direction. Both end parts of the reticulated tube are located on the outer periphery of the tubular member.Type: ApplicationFiled: November 8, 2022Publication date: February 23, 2023Applicant: FUJIKURA LTD.Inventors: Go Taki, Masayuki Ishioka, Mizuki Isaji, Tomoaki Kaji, Soichiro Kaneko, Koji Tomikawa, Akira Namazue, Ken Osato
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Patent number: 11525972Abstract: A reticulated tube includes: a plurality of openings that are reticulately formed; peripheral parts that form the openings; and a branch part that is formed in a boundary of three or more openings. The branch part includes three or more peripheral parts extending from the branch part. The reticulated tube is configured to accommodate a plurality of optical fibers inserted through the reticulated tube. The peripheral parts are restricted by the branch part and are bendable.Type: GrantFiled: September 18, 2019Date of Patent: December 13, 2022Assignee: Fujikura Ltd.Inventors: Go Taki, Masayuki Ishioka, Mizuki Isaji, Tomoaki Kaji, Soichiro Kaneko, Koji Tomikawa, Akira Namazue, Ken Osato
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Publication number: 20210341695Abstract: A reticulated tube includes: a plurality of openings that are reticulately formed; peripheral parts that form the openings; and a branch part that is formed in a boundary of three or more openings. The branch part includes three or more peripheral parts extending from the branch part. The reticulated tube is configured to accommodate a plurality of optical fibers inserted through the reticulated tube. The peripheral parts are restricted by the branch part and are bendable.Type: ApplicationFiled: September 18, 2019Publication date: November 4, 2021Applicant: FUJIKURA LTD.Inventors: Go Taki, Masayuki Ishioka, Mizuki Isaji, Tomoaki Kaji, Soichiro Kaneko, Koji Tomikawa, Akira Namazue, Ken Osato
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Patent number: 10409022Abstract: A method for producing an optical fiber unit by winding at least two bundling members on the outer circumference of an optical fiber bundle formed by bundling a plurality of optical fibers, including: feeding the optical fiber bundle from a fiber passage member; feeding the bundling members while forming intersection points between two of the bundling members on the outer circumference of the optical fiber bundle by feeding at least one of the bundling members from a bundling member passage part of a rotating member arranged to the outer circumference of the fiber passage member, while causing the rotating member to oscillate, with the feeding direction serving as the axis; and fusion-bonding the bundling members at their intersection points.Type: GrantFiled: March 9, 2016Date of Patent: September 10, 2019Assignee: FUJIKURA LTD.Inventors: Tomoaki Kaji, Masataka Mikami, Masayuki Ishioka, Ken Osato, Masayoshi Yamanaka, Naoki Okada
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Publication number: 20170139168Abstract: A method for producing an optical fiber unit by winding at least two bundling members on the outer circumference of an optical fiber bundle formed by bundling a plurality of optical fibers, including: feeding the optical fiber bundle from a fiber passage member; feeding the bundling members while forming intersection points between two of the bundling members on the outer circumference of the optical fiber bundle by feeding at least one of the bundling members from a bundling member passage part of a rotating member arranged to the outer circumference of the fiber passage member, while causing the rotating member to oscillate, with the feeding direction serving as the axis; and fusion-bonding the bundling members at their intersection points.Type: ApplicationFiled: March 9, 2016Publication date: May 18, 2017Applicant: FUJIKURA LTD.Inventors: Tomoaki KAJI, Masataka MIKAMI, Masayuki ISHIOKA, Ken OSATO, Masayoshi YAMANAKA, Naoki OKADA
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Patent number: 9618717Abstract: An objective of the disclosure is to improve workability in extracting optical fibers in an optical fiber unit in which a bundle of optical fibers is bundled by bundling members, and to suppress/prevent an increase in transmission loss even when tension is applied to the bundling members. This optical fiber unit includes: a plurality of optical fibers; and at least three bundling members that bundle the optical fibers into a bundle. A first bundling member, among the plurality of bundling members, is arranged along a length direction of the bundle of optical fibers so as to be wound on an outer circumference of the bundle of optical fibers. The first bundling member is joined with a second bundling member at a contact point where the first bundling member contacts the second bundling member, and is joined with a third bundling member, which is different from the second bundling member, at a contact point where the first bundling member contacts the third bundling member.Type: GrantFiled: October 1, 2014Date of Patent: April 11, 2017Assignee: FUJIKURA LTD.Inventors: Naoto Ito, Masayuki Ishioka, Kouji Tomikawa, Ken Osato, Masayoshi Yamanaka, Naoki Okada
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Publication number: 20160223769Abstract: An objective of the disclosure is to improve workability in extracting optical fibers in an optical fiber unit in which a bundle of optical fibers is bundled by bundling members, and to suppress/prevent an increase in transmission loss even when tension is applied to the bundling members. This optical fiber unit includes: a plurality of optical fibers; and at least three bundling members that bundle the optical fibers into a bundle. A first bundling member, among the plurality of bundling members, is arranged along a length direction of the bundle of optical fibers so as to be wound on an outer circumference of the bundle of optical fibers. The first bundling member is joined with a second bundling member at a contact point where the first bundling member contacts the second bundling member, and is joined with a third bundling member, which is different from the second bundling member, at a contact point where the first bundling member contacts the third bundling member.Type: ApplicationFiled: October 1, 2014Publication date: August 4, 2016Applicant: FUJIKURA LTD.Inventors: Naoto ITO, Masayuki ISHIOKA, Kouji TOMIKAWA, Ken OSATO, Masayoshi YAMANAKA, Naoki OKADA
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Patent number: 9056434Abstract: An apparatus with: an extrusion head with a tip and a die concentrically arranged therewithin and extrudes a tube between the tip and the die; a needle that feeds at least one optical fiber and filler to be filled around the optical fiber into the tube being extrusion-molded; and a cylindrical bundling member provided within the needle. The bundling member has a bundling hole smaller than an inner diameter of the tube at a center thereof and into which the optical fiber can pass through, and a flow pass penetrating along a feeding direction of the filler between the bundling hole and an inner circumferential surface of the needle. In a method using the apparatus, the optical fiber is passed through a bundling hole to be bundled at a center of the tube. The filler is passed through a flow path to be filled around the optical fiber.Type: GrantFiled: May 29, 2013Date of Patent: June 16, 2015Assignee: FUJIKURA LTD.Inventors: Naoki Okada, Yoshio Hashimoto, Masayuki Ishioka
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Publication number: 20130309398Abstract: An apparatus with: an extrusion head with a tip and a die concentrically arranged therewithin and extrudes a tube between the tip and the die; a needle that feeds at least one optical fiber and filler to be filled around the optical fiber into the tube being extrusion-molded; and a cylindrical bundling member provided within the needle. The bundling member has a bundling hole smaller than an inner diameter of the tube at a center thereof and into which the optical fiber can pass through, and a flow pass penetrating along a feeding direction of the filler between the bundling hole and an inner circumferential surface of the needle. In a method using the apparatus, the optical fiber is passed through a bundling hole to be bundled at a center of the tube. The filler is passed through a flow path to be filled around the optical fiber.Type: ApplicationFiled: May 29, 2013Publication date: November 21, 2013Applicant: FUJIKURA LTD.Inventors: Naoki OKADA, Yoshio HASHIMOTO, Masayuki ISHIOKA
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Patent number: 8470213Abstract: An extrusion-molding apparatus for a loose tube includes: an extrusion head that includes a tip and a die concentrically arranged therewithin and extrudes a tube between the tip and the die; a needle that feeds at least one optical fiber and filler to be filled around the optical fiber into the tube being extrusion-molded; and a cylindrical bundling member provided within the needle. The bundling member has a bundling hole being smaller than an inner diameter of the tube at a center thereof and into which the optical fiber can pass through, and a flow pass penetrating along a feeding direction of the filler between the bundling hole and an inner circumferential surface of the needle. In an extrusion molding method using the extrusion-molding apparatus, the optical fiber is passed through a bundling hole to be bundled at an almost center of the tube. In addition, filler is passed through a flow path to be filled around the optical fiber.Type: GrantFiled: October 29, 2008Date of Patent: June 25, 2013Assignee: Fujikura Ltd.Inventors: Naoki Okada, Yoshio Hashimoto, Masayuki Ishioka
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Publication number: 20100247045Abstract: An extrusion-molding apparatus for a loose tube includes: an extrusion head that includes a tip and a die concentrically arranged therewithin and extrudes a tube between the tip and the die; a needle that feeds at least one optical fiber and filler to be filled around the optical fiber into the tube being extrusion-molded; and a cylindrical bundling member provided within the needle. The bundling member has a bundling hole being smaller than an inner diameter of the tube at a center thereof and into which the optical fiber can pass through, and a flow pass penetrating along a feeding direction of the filler between the bundling hole and an inner circumferential surface of the needle. In an extrusion molding method using the extrusion-molding apparatus, the optical fiber is passed through a bundling hole to be bundled at an almost center of the tube. In addition, filler is passed through a flow path to be filled around the optical fiber.Type: ApplicationFiled: October 29, 2008Publication date: September 30, 2010Inventors: Naoki Okada, Yoshio Hashimoto, Masayuki Ishioka