Patents by Inventor Kou Shirakigawa

Kou Shirakigawa 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).

  • CYLINDER BLOCK AND COUPLING METHOD FOR WATER JACKET SPACER
    Publication number: 20230366362
    Abstract: A cylinder block includes a water jacket surrounding a cylinder of an internal combustion engine and a water jacket spacer disposed inside the water jacket. In the cylinder block, a direction toward a center of the cylinder in a radial direction of the cylinder is defined as an inner side. A direction away from the center in the radial direction of the cylinder is defined as an outer side. The water jacket spacer includes a spacer plate and a conversion portion protruding from the spacer plate in the radial direction. The conversion portion has an action surface on which a pressure of coolant flowing through the water jacket acts. The conversion portion converts a force applied to the action surface by the pressure of the coolant into a force pushing the spacer plate toward the inner side.
    Type: Application
    Filed: May 9, 2023
    Publication date: November 16, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuki AKIMOTO, Takashi MATSUTANI, Kou SHIRAKIGAWA
  • Cylinder block and coupling method for water jacket spacer
    Patent number: 11802521
    Abstract: A cylinder block includes a water jacket surrounding a cylinder of an internal combustion engine and a water jacket spacer disposed inside the water jacket. In the cylinder block, a direction toward a center of the cylinder in a radial direction of the cylinder is defined as an inner side. A direction away from the center in the radial direction of the cylinder is defined as an outer side. The water jacket spacer includes a spacer plate and a conversion portion protruding from the spacer plate in the radial direction. The conversion portion has an action surface on which a pressure of coolant flowing through the water jacket acts. The conversion portion converts a force applied to the action surface by the pressure of the coolant into a force pushing the spacer plate toward the inner side.
    Type: Grant
    Filed: May 9, 2023
    Date of Patent: October 31, 2023
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuki Akimoto, Takashi Matsutani, Kou Shirakigawa