Patents by Inventor Ryoto NAKAMURA

Ryoto NAKAMURA 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: 11713809
    Abstract: A cam guiding device includes a cam guide having a cylindrical portion, a partially cylindrical portion extending from a leading end portion of the cylindrical portion, a partially tapered portion extending from the leading end portion of the cylindrical portion, and a rotation stopper portion provided on the partially cylindrical portion, and a sleeve for accommodating the cam guide. The sleeve includes an arc portion that overlaps the partially cylindrical portion from an outside. A radius of the partially tapered portion increases as the partially tapered portion extends away from the cylindrical portion. The rotation stopper portion is a component that protrudes radially outward from an outer circumferential surface of the partially cylindrical portion. When the rotation stopper portion abuts the sleeve and an inner circumferential surface of the cam guide abuts the parking cam, rotation of the cam guide with respect to the sleeve is restricted.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: August 1, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryoto Nakamura, Takuya Kodama, Atsushi Teshima
  • Publication number: 20230184321
    Abstract: A vehicle lubrication system for a hybrid electric vehicle which includes (i) an engine, (ii) drive wheels, (iii) a power transmission apparatus including an output portion and configured to transmit a power transmitted from the engine and (iv) a driving rotary machine connected to the output portion. The vehicle lubrication system includes (a) a mechanically driven pump connected to the output portion; (b) a fluid passage connected to an outlet of the pump, and configured to supply a lubricant to the driving rotary machine; (c) a relief valve connected to a relieving portion of the fluid passage, which is located between the outlet of the pump and the driving rotary machine in the fluid passage; and (d) an ON-OFF valve provided between the relieving portion and the driving rotary machine in the fluid passage, and configured to selectively allow and inhibit supply of the lubricant to the driving rotary machine.
    Type: Application
    Filed: August 23, 2022
    Publication date: June 15, 2023
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ryoto NAKAMURA, Tomonori Uchida, Atsushi Teshima
  • Publication number: 20220307597
    Abstract: A cam guiding device includes a cam guide having a cylindrical portion, a partially cylindrical portion extending from a leading end portion of the cylindrical portion, a partially tapered portion extending from the leading end portion of the cylindrical portion, and a rotation stopper portion provided on the partially cylindrical portion, and a sleeve for accommodating the cam guide. The sleeve includes an arc portion that overlaps the partially cylindrical portion from an outside. A radius of the partially tapered portion increases as the partially tapered portion extends away from the cylindrical portion. The rotation stopper portion is a component that protrudes radially outward from an outer circumferential surface of the partially cylindrical portion. When the rotation stopper portion abuts the sleeve and an inner circumferential surface of the cam guide abuts the parking cam, rotation of the cam guide with respect to the sleeve is restricted.
    Type: Application
    Filed: March 18, 2022
    Publication date: September 29, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryoto NAKAMURA, Takuya KODAMA, Atsushi TESHIMA