Patents by Inventor Makoto HIRUTA

Makoto HIRUTA 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).

  • Power transmission device
    Patent number: 11767899
    Abstract: In a power transmission device, a dynamic damper is provided in a power transmission path having at least one damper disposed therein, and has an inertial rotating body that can rotate relative to a transmission rotating member forming part of the power transmission path, and a dynamic damper spring that can provide connection between the transmission rotating member and the inertial rotating body. A preset load is applied to the dynamic damper spring in a non-transmitting state of the power transmission path. The dynamic damper spring is supported on either one of the transmission rotating member and the inertial rotating body so as to apply the preset load to the dynamic damper spring in the non-transmitting state, and a gap is set in a rotational direction in the non-transmitting state between the dynamic damper spring and an other one of the transmission rotating member and the inertial rotating body.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: September 26, 2023
    Assignee: Yutaka Giken Co., Ltd.
    Inventors: Kentaro Watanabe, Kazuto Nagaishi, Makoto Hiruta, Tatsuya Muramatsu
  • POWER TRANSMISSION DEVICE
    Publication number: 20200393018
    Abstract: In a power transmission device, a dynamic damper is provided in a power transmission path having at least one damper disposed therein, and has an inertial rotating body that can rotate relative to a transmission rotating member forming part of the power transmission path, and a dynamic damper spring that can provide connection between the transmission rotating member and the inertial rotating body. A preset load is applied to the dynamic damper spring in a non-transmitting state of the power transmission path. The dynamic damper spring is supported on either one of the transmission rotating member and the inertial rotating body so as to apply the preset load to the dynamic damper spring in the non-transmitting state, and a gap is set in a rotational direction in the non-transmitting state between the dynamic damper spring and an other one of the transmission rotating member and the inertial rotating body.
    Type: Application
    Filed: June 2, 2020
    Publication date: December 17, 2020
    Inventors: Kentaro WATANABE, Kazuto NAGAISHI, Makoto HIRUTA, Tatsuya MURAMATSU