Patents by Inventor Tomomitsu Kurokawa

Tomomitsu Kurokawa 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).

  • Core wire for friction transmission belts, friction transmission belt, and manufacturing methods therefor
    Patent number: 11815158
    Abstract: The present invention relates to a core wire for a frictional power-transmission belt, the core wire including a Lang lay cord, having a total fineness of 300 to 1000 tex, and including a rubber component adhered to at least a part of a surface of the core wire, in which the Lang lay cord comprises a first-twisted yarn, and in which the first-twisted yarn comprises a carbon fiber.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: November 14, 2023
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Takuya Tomoda, Takeshi Nishiyama, Masashi Tamura, Tomomitsu Kurokawa
  • CORE WIRE FOR FRICTION TRANSMISSION BELTS, FRICTION TRANSMISSION BELT, AND MANUFACTURING METHODS THEREFOR
    Publication number: 20210222755
    Abstract: The present invention relates to a core wire for a frictional power-transmission belt, the core wire including a Lang lay cord, having a total fineness of 300 to 1000 tex, and including a rubber component adhered to at least a part of a surface of the core wire, in which the Lang lay cord comprises a first-twisted yarn, and in which the first-twisted yarn comprises a carbon fiber.
    Type: Application
    Filed: August 19, 2019
    Publication date: July 22, 2021
    Applicant: Mitsuboshi Belting Ltd.
    Inventors: Takuya Tomoda, Takeshi Nishiyama, Masashi Tamura, Tomomitsu Kurokawa
  • Fiber cord and power transmission belt using the same
    Patent number: 5521007
    Abstract: A fiber cord having a plurality of fiber filaments twisted together in a first direction to produce strand yarns with a primary twist and a first twist coefficient, with a plurality of the strand yarns being in turn aligned and twisted together in a second twist direction opposite to the first twist direction to produce a fiber cord with a final twist and a second twist coefficient. The second twist coefficient is between 4.0 and 7.0 and the ratio of the second twist coefficient to the first twist coefficient is at least 1.25.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: May 28, 1996
    Assignee: Mitsuboshi Belting Ltd.
    Inventor: Tomomitsu Kurokawa