Patents by Inventor Hidekazu TSUCHIYA

Hidekazu TSUCHIYA 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).

  • Electric booster
    Patent number: 11338784
    Abstract: An electronic booster includes an electric motor configured to thrust a piston in a master cylinder, a stroke detection device configured to detect a movement amount of an input member connected to a brake pedal, a rotational angle detection portion configured to detect a rotational angle of a rotational shaft of the electric motor, a control device configured to control driving of the electric motor, and a casing containing a wiring electrically connecting the electric motor and the control device to each other. The stroke detection device includes a first magnet configured to move together with the input member and a first magnetism detection element configured to detect magnetism from the first magnet. The rotational angle detection portion includes a second magnet configured to move together with the rotational shaft of the electric motor and a second magnetism detection element configured to detect magnetism from the second magnet.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: May 24, 2022
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Norihisa Fukayama, Hidekazu Tsuchiya, Shinji Shimizu
  • ELECTRIC BOOSTER
    Publication number: 20200023828
    Abstract: An electronic booster includes an electric motor configured to thrust a piston in a master cylinder, a stroke detection device configured to detect a movement amount of an input member connected to a brake pedal, a rotational angle detection portion configured to detect a rotational angle of a rotational shaft of the electric motor, a control device configured to control driving of the electric motor, and a casing containing a wiring electrically connecting the electric motor and the control device to each other. The stroke detection device includes a first magnet configured to move together with the input member and a first magnetism detection element configured to detect magnetism from the first magnet. The rotational angle detection portion includes a second magnet configured to move together with the rotational shaft of the electric motor and a second magnetism detection element configured to detect magnetism from the second magnet.
    Type: Application
    Filed: February 15, 2018
    Publication date: January 23, 2020
    Inventors: Norihisa FUKAYAMA, Hidekazu TSUCHIYA, Shinji SHIMIZU