Patents by Inventor Yoshihiro TAKEYAMA

Yoshihiro TAKEYAMA 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).

  • Patent number: 11867871
    Abstract: An optical connector including a ferrule, an outer housing, and a latch is disclosed. The ferrule holds an optical fiber at a front end of the optical connector. The outer housing is located closer to a rear end of the optical connector than the ferrule. The latch is connected to the outer housing and extends from a proximal end toward the front end of the optical connector. The latch includes an engaging part to engage with an external device at a distal end thereof. The latch is configured such that the engaging part is pushed down toward the ferrule. The engaging part includes an engaging main body and an engaging protrusion protruding outwardly from the engaging main body. The engaging protrusion includes an engaging surface to engage with the external device at a rear of the engaging protrusion, and an edge of the engaging surface is chamfered.
    Type: Grant
    Filed: August 10, 2021
    Date of Patent: January 9, 2024
    Assignee: SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD.
    Inventors: Takahiro Inaba, Yoshikyo Tamekuni, Yoshihiro Takeyama, Mitsumasa Seita
  • Publication number: 20220350103
    Abstract: A package for an optical fiber includes: a base portion; a plurality of protruding portions that protrude from a flat surface of the base portion, are arranged along an outer periphery of the base portion, and are configured so that an optical fiber including a connector mounted to at least one end thereof is wound along a part of an outer periphery of each of the protruding portions; a mounting portion to which the connector of the optical fiber is to be mounted; and a plurality of fall-off preventing portions that are formed integrally with the base portion and capable of restricting a position of the optical fiber to be wound over the plurality of protruding portions.
    Type: Application
    Filed: April 16, 2021
    Publication date: November 3, 2022
    Applicant: SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD.
    Inventors: Junji FUKUI, Yoshikyo TAMEKUNI, Takahiro INABA, Yoshihiro TAKEYAMA, Daizo NISHIOKA, Hisahiko NARUKAWA, Yuji MATSUMOTO, Shinsuke SATO, Tuan Nghia DUONG
  • Publication number: 20220320838
    Abstract: A cable stripping tool according to one embodiment is a cable stripping tool that strips a sheath of a cable. The cable stripping tool includes a blade protruding from an inner surface of a hole into which the cable is to be inserted. The sheath of the cable inserted into the hole is cut by the blade when the cable is pulled out from the hole along an extending direction of the cable. A cross-sectional shape of the hole is a non-circular shape in a plane orthogonal to the extending direction. The hole includes a space portion that a deformed portion of the cable inserted into the hole enters.
    Type: Application
    Filed: February 1, 2022
    Publication date: October 6, 2022
    Applicant: SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD.
    Inventor: Yoshihiro TAKEYAMA
  • Patent number: 11409053
    Abstract: An optical connector including a housing body having a ferrule, an outer housing, a latch, and a tab is disclosed. The latch extends from a proximal end toward a front end of the optical connector and includes an engaging part at a distal end. The tab is placed on an outer side of the latch, movable with respect to the outer housing, and pushes down the engaging part toward the housing body according to movement of the tab. The distal end of the latch floats to space apart from the housing body. A first protrusion is disposed on an inner side of the tab. The optical connector is configured to contact an inner side of the latch with the first protrusion to push down the engaging part toward the housing body with the first protrusion as a fulcrum when the engaging part is engaged with the external device.
    Type: Grant
    Filed: January 15, 2021
    Date of Patent: August 9, 2022
    Assignees: SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takahiro Inaba, Yoshikyo Tamekuni, Daizo Nishioka, Yoshihiro Takeyama, Mitsumasa Seita
  • Publication number: 20210364704
    Abstract: An optical connector including a ferrule, an outer housing, and a latch is disclosed. The ferrule holds an optical fiber at a front end of the optical connector. The outer housing is located closer to a rear end of the optical connector than the ferrule. The latch is connected to the outer housing and extends from a proximal end toward the front end of the optical connector. The latch includes an engaging part to engage with an external device at a distal end thereof. The latch is configured such that the engaging part is pushed down toward the ferrule. The engaging part includes an engaging main body and an engaging protrusion protruding outwardly from the engaging main body. The engaging protrusion includes an engaging surface to engage with the external device at a rear of the engaging protrusion, and an edge of the engaging surface is chamfered.
    Type: Application
    Filed: August 10, 2021
    Publication date: November 25, 2021
    Applicant: SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD.
    Inventors: Takahiro INABA, Yoshikyo TAMEKUNI, Yoshihiro TAKEYAMA, Mitsumasa SEITA
  • Publication number: 20210255400
    Abstract: An optical connector including a housing body having a ferrule, an outer housing, a latch, and a tab is disclosed. The latch extends from a proximal end toward a front end of the optical connector and includes an engaging part at a distal end. The tab is placed on an outer side of the latch, movable with respect to the outer housing, and pushes down the engaging part toward the housing body according to movement of the tab. The distal end of the latch floats to space apart from the housing body. A first protrusion is disposed on an inner side of the tab. The optical connector is configured to contact an inner side of the latch with the first protrusion to push down the engaging part toward the housing body with the first protrusion as a fulcrum when the engaging part is engaged with the external device.
    Type: Application
    Filed: January 15, 2021
    Publication date: August 19, 2021
    Applicants: SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takahiro INABA, Yoshikyo TAMEKUNI, Daizo NISHIOKA, Yoshihiro TAKEYAMA, Mitsumasa SEITA