Patents by Inventor Yu Asai

Yu Asai 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 brake system
    Patent number: 11597367
    Abstract: In a hydraulic brake system, when a main power supply is in an abnormal condition in which it cannot supply electric power to a pump motor, etc., the pump motor is operated with electric power supplied from an auxiliary power supply, irrespective of the presence of a braking request. Thus, when the main power supply is in the abnormal condition, the number of times inrush current flows is reduced. As a result, the voltage of the auxiliary power supply is less likely to be lower than an operation minimum voltage, and the hydraulic brake system is less likely to be unable to be operated.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: March 7, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomohiro Narematsu, Osamu Kawarada, Yu Asai, Yasuhiro Tajima
  • HYDRAULIC BRAKE SYSTEM
    Publication number: 20200290583
    Abstract: In a hydraulic brake system, when a main power supply is in an abnormal condition in which it cannot supply electric power to a pump motor, etc., the pump motor is operated with electric power supplied from an auxiliary power supply, irrespective of the presence of a braking request. Thus, when the main power supply is in the abnormal condition, the number of times inrush current flows is reduced. As a result, the voltage of the auxiliary power supply is less likely to be lower than an operation minimum voltage, and the hydraulic brake system is less likely to be unable to be operated.
    Type: Application
    Filed: February 7, 2020
    Publication date: September 17, 2020
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomohiro Narematsu, Osamu Kawarada, Yu Asai, Yasuhiro Tajima