Patents by Inventor Yu SEKIYA

Yu SEKIYA 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).

  • Clutch drive device and vehicle
    Patent number: 11143247
    Abstract: A clutch driving device having a self-lock function includes a friction mechanism that generates a friction force in a direction opposite to a rotation direction of rotation transferred by a transfer mechanism that transfers an output of a motor to a clutch. The friction mechanism includes a rotation body that rotates by the force in the rotation direction transferred by the transfer mechanism, a friction plate that generates a friction force by contact with the rotation body, and a spring that biases the friction plate toward the rotation body such that the rotation body and the friction plate are brought into contact with each other. An intermediate shaft of the transfer mechanism includes a rotation transfer portion that rotates together with the rotation body and is movable in the axial direction relative to the rotation body.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: October 12, 2021
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Kengo Minami, Yoshiki Terashima, Yu Sekiya
  • CLUTCH DRIVE DEVICE AND VEHICLE
    Publication number: 20190316639
    Abstract: A clutch driving device having a self-lock function includes a friction mechanism that generates a friction force in a direction opposite to a rotation direction of rotation transferred by a transfer mechanism that transfers an output of a motor to a clutch. The friction mechanism includes a rotation body that rotates by the force in the rotation direction transferred by the transfer mechanism, a friction plate that generates a friction force by contact with the rotation body, and a spring that biases the friction plate toward the rotation body such that the rotation body and the friction plate are brought into contact with each other. An intermediate shaft of the transfer mechanism includes a rotation transfer portion that rotates together with the rotation body and is movable in the axial direction relative to the rotation body.
    Type: Application
    Filed: June 28, 2019
    Publication date: October 17, 2019
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Kengo MINAMI, Yoshiki TERASHIMA, Yu SEKIYA