Patents by Inventor Sari Uchiyama

Sari Uchiyama 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).

  • Hydraulic control system
    Patent number: 11788618
    Abstract: A hydraulic control system includes a linear solenoid valve, an ON-OFF solenoid valve and a hydraulically-operated frictional engagement device. A first hydraulic pressure is regulated by the linear solenoid valve within a predetermined pressure-regulation control range, and is supplied to the frictional engagement device. In a state in which the frictional engagement device is placed in a predetermined engaged state based on the first hydraulic pressure, a second hydraulic pressure, which is higher than the pressure-regulation control range, is supplied from the ON-OFF solenoid valve to the frictional engagement device, such that the frictional engagement device is placed in a fully engaged state with a high engaging torque based on the second hydraulic pressure.
    Type: Grant
    Filed: February 22, 2023
    Date of Patent: October 17, 2023
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN CORPORATION
    Inventors: Guodong Tan, Masayasu Mizobuchi, Masayuki Baba, Yu Nagasato, Yoshio Hasegawa, Kensuke Wada, Sari Uchiyama
  • HYDRAULIC CONTROL SYSTEM
    Publication number: 20230265919
    Abstract: A hydraulic control system includes a linear solenoid valve, an ON-OFF solenoid valve and a hydraulically-operated frictional engagement device. A first hydraulic pressure is regulated by the linear solenoid valve within a predetermined pressure-regulation control range, and is supplied to the frictional engagement device. In a state in which the frictional engagement device is placed in a predetermined engaged state based on the first hydraulic pressure, a second hydraulic pressure, which is higher than the pressure-regulation control range, is supplied from the ON-OFF solenoid valve to the frictional engagement device, such that the frictional engagement device is placed in a fully engaged state with a high engaging torque based on the second hydraulic pressure.
    Type: Application
    Filed: February 22, 2023
    Publication date: August 24, 2023
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN CORPORATION
    Inventors: Guodong Tan, Masayasu Mizobuchi, Masayuki Baba, Yu Nagasato, Yoshio Hasegawa, Kensuke Wada, Sari Uchiyama