Patents by Inventor Tomohiro Aritake

Tomohiro Aritake 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).

  • Shift-by-wire system
    Patent number: 8340859
    Abstract: A shift-by-wire system, connected to a manual shaft in a vehicle, includes: an electric motor having a rotary shaft which rotates the manual shaft; an angle-of-rotation sensor that detects angle position of the rotary shaft for control of the electric motor; a shaft position sensor that detects angular position of the manual shaft; and a control unit that, when the angle-of-rotation sensor functions normally, controls the electric motor according to the sensed angular position of the rotary shaft, so that the sensed angular position of the shaft comes within a predetermined range, and when the angle-of-rotation sensor does not function normally, initiates sensor-less control of the electric motor while estimating the direction of rotation of the rotation shaft, based on the sensed angular position of the shaft, and ceases sensor-less control when the sensed angular position is within the predetermined range.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: December 25, 2012
    Assignee: Aisin AW Co., Ltd.
    Inventors: Yoshinobu Ito, Tomohiro Aritake
  • SHIFT-BY-WIRE SYSTEM
    Publication number: 20100250055
    Abstract: A shift-by-wire system, connected to a manual shaft in a vehicle, includes: an electric motor having a rotary shaft which rotates the manual shaft; an angle-of-rotation sensor that detects angle position of the rotary shaft for control of the electric motor; a shaft position sensor that detects angular position of the manual shaft; and a control unit that, when the angle-of-rotation sensor functions normally, controls the electric motor according to the sensed angular position of the rotary shaft, so that the sensed angular position of the shaft comes within a predetermined range, and when the angle-of-rotation sensor does not function normally, initiates sensor-less control of the electric motor while estimating the direction of rotation of the rotation shaft, based on the sensed angular position of the shaft, and ceases sensor-less control when the sensed angular position is within the predetermined range.
    Type: Application
    Filed: January 21, 2010
    Publication date: September 30, 2010
    Applicant: AISIN AW CO., LTD.
    Inventors: Yoshinobu ITO, Tomohiro Aritake