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).

  • Publication number: 20230333324
    Abstract: 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: Application
    Filed: August 30, 2021
    Publication date: October 19, 2023
    Applicants: NIPPON TSUSHIN DENZAI CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yoshio UKITA, Tsuyoshi IMAIZUMI
  • Publication number: 20230314729
    Abstract: 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: Application
    Filed: August 30, 2021
    Publication date: October 5, 2023
    Applicants: NIPPON TSUSHIN DENZAI CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yoshio UKITA, Tsuyoshi IMAIZUMI
  • Patent number: 9075204
    Abstract: 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: Grant
    Filed: August 3, 2009
    Date of Patent: July 7, 2015
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Daizo Nishioka, Yukihiro Yokomachi, Yoshinobu Toda, Yoshio Ukita
  • Patent number: 8740479
    Abstract: 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: Grant
    Filed: January 10, 2012
    Date of Patent: June 3, 2014
    Assignees: SEI Optifrontier Co., Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Seiji Shitama, Yoshikyo Tamekuni, Yukihiro Yokomachi, Yoshio Ukita, Motoyoshi Kimura
  • Publication number: 20130121653
    Abstract: 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: Application
    Filed: January 10, 2012
    Publication date: May 16, 2013
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SEI OPTIFRONTIER CO., LTD.
    Inventors: Seiji Shitama, Yoshikyo Tamekuni, Yukihiro Yokomachi, Yoshio Ukita, Motoyoshi Kimura
  • Patent number: 8401356
    Abstract: 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: Grant
    Filed: April 30, 2009
    Date of Patent: March 19, 2013
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Daizo Nishioka, Takayasu Yamauchi, Yukihiro Yokomachi, Yoshinobu Toda, Yoshio Ukita
  • Patent number: 7970251
    Abstract: 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: Grant
    Filed: January 18, 2008
    Date of Patent: June 28, 2011
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Masahiro Hamada, Yoshio Ukita, Motoyoshi Kimura, Tetsuya Ohsugi
  • Publication number: 20110119904
    Abstract: 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: Application
    Filed: August 3, 2009
    Publication date: May 26, 2011
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Daizo Nishioka, Yukihiro Yokomachi, Yoshinobu Toda, Yoshio Ukita
  • Publication number: 20110056246
    Abstract: 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: Application
    Filed: April 30, 2009
    Publication date: March 10, 2011
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Daizo Nishioka, Takayasu Yamauchi, Yukihiro Yokomachi, Yoshinobu Toda, Yoshio Ukita
  • Publication number: 20100080513
    Abstract: 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: Application
    Filed: January 18, 2008
    Publication date: April 1, 2010
    Inventors: Masahiro Hamada, Yoshio Ukita, Motoyoshi Kimura, Tetsuya Ohsugi