Patents by Inventor Yoshio Ukita
Yoshio Ukita 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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Publication number: 20230333324Abstract: In an optical connector, a connector main body includes an integrally formed plug frame. The plug frame has a connecting portion accommodation portion accommodating a ferrule, a mechanical splice, and a spring biasing the mechanical splice toward the ferrule, and a guide portion guiding the optical fiber extending from an optical cable. The connecting portion accommodation portion and the guide portion are partitioned via a partition wall having a cylindrical protrusion protruding into the connecting portion accommodation portion. The guide portion has a curved face extending in a conical shape from the partition wall.Type: ApplicationFiled: August 30, 2021Publication date: October 19, 2023Applicants: NIPPON TSUSHIN DENZAI CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yoshio UKITA, Tsuyoshi IMAIZUMI
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Publication number: 20230314729Abstract: An optical fiber connecting jig according to one embodiment includes: a plate-shaped base mounted on the optical connector so as to cover the optical connector; a wedge portion protruding from the base and inserted into a mechanical splice; an operation portion provided respectively on both sides of the base in a width direction and protruding in the width direction from the optical connector; a pair of first engagement portions provided respectively on both sides of the base in the width direction on one side of the base in a longitudinal direction and protruding toward the optical connector; and a pair of second engagement portions provided respectively on both sides of the base in the width direction on the other side of the base in the longitudinal direction and protruding toward the optical connector.Type: ApplicationFiled: August 30, 2021Publication date: October 5, 2023Applicants: NIPPON TSUSHIN DENZAI CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yoshio UKITA, Tsuyoshi IMAIZUMI
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Patent number: 9075204Abstract: There is provided an optical connector construction tool, which is constructed as a single component, and is compact in size and simple, wherein the construction tool allows an operation of withdrawing a wedge to be more reliably performed, and a manufacturing costs to be reduced. The optical connector construction tool comprises a base plate, a wedge provided to a bottom surface of the base plate and inserted into a mechanical splice part of an optical connector, a pair of arms extending from both sides of the base plate, and protrusions projecting from the arms toward the base plate, the protrusions engaging with the bottom of the base plate and deflecting the base plate upward as a result of the arms being laterally brought together.Type: GrantFiled: August 3, 2009Date of Patent: July 7, 2015Assignee: Sumitomo Electric Industries, Ltd.Inventors: Daizo Nishioka, Yukihiro Yokomachi, Yoshinobu Toda, Yoshio Ukita
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Patent number: 8740479Abstract: An optical connector to which an optical fiber cord including an optical fiber ribbon and a sheath is to be attached includes: a ferrule member a fusion splice protection sleeve, housing and a fixing member. The ferrule member holds a plurality of embedded fibers which are to be fusion-spliced respectively to a plurality of optical fibers constituting the optical fiber ribbon. The fusion splice protection sleeve protects a fusion-spliced portion. The housing houses the ferrule member and the fusion splice protection sleeve. The housing has, at the rear end, a recess for receiving a bifurcated portion of the sheath. The fixing member fixes the sheath to the housings and by holding it.Type: GrantFiled: January 10, 2012Date of Patent: June 3, 2014Assignees: SEI Optifrontier Co., Ltd., Sumitomo Electric Industries, Ltd.Inventors: Seiji Shitama, Yoshikyo Tamekuni, Yukihiro Yokomachi, Yoshio Ukita, Motoyoshi Kimura
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Publication number: 20130121653Abstract: An optical connector to which an optical fiber cord including an optical fiber ribbon and a sheath is to be attached includes: a ferrule member a fusion splice protection sleeve, housing and a fixing member. The ferrule member holds holding a plurality of embedded fibers which are to be fusion-spliced respectively to a plurality of optical fibers constituting the optical fiber ribbon. The fusion splice protection sleeve protects a fusion-spliced portion. The housing houses the ferrule member and the fusion splice protection sleeve. The housing has, at the rear end, a recess for receiving a bifurcated portion of the sheath. The fixing member for fixing fixes the sheath to the housings and by holding it.Type: ApplicationFiled: January 10, 2012Publication date: May 16, 2013Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SEI OPTIFRONTIER CO., LTD.Inventors: Seiji Shitama, Yoshikyo Tamekuni, Yukihiro Yokomachi, Yoshio Ukita, Motoyoshi Kimura
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Patent number: 8401356Abstract: An optical connector assembling jig and an optical connector assembling method includes an optical connection. The optical connector assembling jig includes a base and a guide. The base is provided in a longitudinal direction with an accommodation groove for accommodating an optical fiber, and a rear pressing member for restraining a rear part of the optical fiber accommodated in the accommodation groove. The rear part is set apart from an embedded fiber. The guide has a front holding portion for holding a front part of the optical fiber accommodated in the accommodation groove. The front part is near the embedded fiber, and the guide is capable of moving in the longitudinal direction. Moving the base toward the optical connector causes the intermediate section of the optical fiber to separate from the accommodation groove and bend. By moving the base further toward the optical connector, a buffered fiber in the optical fiber can be connected to the embedded fiber.Type: GrantFiled: April 30, 2009Date of Patent: March 19, 2013Assignee: Sumitomo Electric Industries, Ltd.Inventors: Daizo Nishioka, Takayasu Yamauchi, Yukihiro Yokomachi, Yoshinobu Toda, Yoshio Ukita
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Patent number: 7970251Abstract: An outlet device, which is to be arranged on a wall surface, includes an outlet box in which electric wiring and optical interconnection are to be accommodated, and a cover plate which covers the outlet box. The cover plate includes a plate surface formed with an opening section through which an electric connection port of at least one of a telephone jack and an electric power supply outlet is to be exposed, and a bulged portion formed, on left or right side of the plate surface, to bulge frontward from the plate surface. The bulged portion is operable to accommodate a connection adaptor to which an optical connector attached directly to an end portion of an optical fiber is fitted, and includes a bottom face formed with an opening through which an optical connection port of the connection adaptor is to be exposed so as to be oriented downward.Type: GrantFiled: January 18, 2008Date of Patent: June 28, 2011Assignee: Sumitomo Electric Industries, Ltd.Inventors: Masahiro Hamada, Yoshio Ukita, Motoyoshi Kimura, Tetsuya Ohsugi
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Publication number: 20110119904Abstract: There is provided an optical connector construction tool, which is constructed as a single component, and is compact in size and simple, wherein the construction tool allows an operation of withdrawing a wedge to be more reliably performed, and a manufacturing costs to be reduced. The optical connector construction tool comprises a base plate, a wedge provided to a bottom surface of the base plate and inserted into a mechanical splice part of an optical connector, a pair of arms extending from both sides of the base plate, and protrusions projecting from the arms toward the base plate, the protrusions engaging with the bottom of the base plate and deflecting the base plate upward as a result of the arms being laterally brought together.Type: ApplicationFiled: August 3, 2009Publication date: May 26, 2011Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Daizo Nishioka, Yukihiro Yokomachi, Yoshinobu Toda, Yoshio Ukita
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Publication number: 20110056246Abstract: An optical connector assembling jig and an optical connector assembling method includes an optical connection. The optical connector assembling jig includes a base and a guide. The base is provided in a longitudinal direction with an accommodation groove for accommodating an optical fiber, and a rear pressing member for restraining a rear part of the optical fiber accommodated in the accommodation groove. The rear part is set apart from an embedded fiber. The guide has a front holding portion for holding a front part of the optical fiber accommodated in the accommodation groove. The front part is near the embedded fiber, and the guide is capable of moving in the longitudinal direction. Moving the base toward the optical connector causes the intermediate section of the optical fiber to separate from the accommodation groove and bend. By moving the base further toward the optical connector, a buffered fiber in the optical fiber can be connected to the embedded fiber.Type: ApplicationFiled: April 30, 2009Publication date: March 10, 2011Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Daizo Nishioka, Takayasu Yamauchi, Yukihiro Yokomachi, Yoshinobu Toda, Yoshio Ukita
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Publication number: 20100080513Abstract: An outlet device, which is to be arranged on a wall surface, includes an outlet box in which electric wiring and optical interconnection are to be accommodated, and a cover plate which covers the outlet box. The cover plate includes a plate surface formed with an opening section through which an electric connection port of at least one of a telephone jack and an electric power supply outlet is to be exposed, and a bulged portion formed, on left or right side of the plate surface, to bulge frontward from the plate surface. The bulged portion is operable to accommodate a connection adaptor to which an optical connector attached directly to an end portion of an optical fiber is fitted, and includes a bottom face formed with an opening through which an optical connection port of the connection adaptor is to be exposed so as to be oriented downward.Type: ApplicationFiled: January 18, 2008Publication date: April 1, 2010Inventors: Masahiro Hamada, Yoshio Ukita, Motoyoshi Kimura, Tetsuya Ohsugi