Patents by Inventor Shoji Yagi

Shoji Yagi 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).

  • Control device for automatic transmission
    Patent number: 9145970
    Abstract: There is provided a control device for an automatic transmission configured to automatically shift a transmission of a driving force of a motor in response to a driving state. The automatic transmission includes a synchromesh mechanism configured to couple gear pairs and a rotary shaft to transmit the driving force of the motor to the gear pairs and a switching apparatus configured to switch a coupling state of the gear pairs and the rotary shaft. A preload control unit is configured to operate the switching apparatus to apply a preload to the synchromesh mechanism when a shift transmission request is detected. A shift control unit is configured to operate the switching apparatus to apply a shift load greater than the preload to the synchromesh mechanism after the preload is applied to the synchromesh mechanism.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: September 29, 2015
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Kazuhiko Suzuki, Shoji Yagi
  • CONTROL DEVICE FOR AUTOMATIC TRANSMISSION
    Publication number: 20140011633
    Abstract: There is provided a control device for an automatic transmission configured to automatically shift a transmission of a driving force of a motor in response to a driving state. The automatic transmission includes a synchromesh mechanism configured to couple gear pairs and a rotary shaft to transmit the driving force of the motor to the gear pairs and a switching apparatus configured to switch a coupling state of the gear pairs and the rotary shaft. A preload control unit is configured to operate the switching apparatus to apply a preload to the synchromesh mechanism when a shift transmission request is detected. A shift control unit is configured to operate the switching apparatus to apply a shift load greater than the preload to the synchromesh mechanism after the preload is applied to the synchromesh mechanism.
    Type: Application
    Filed: July 5, 2013
    Publication date: January 9, 2014
    Inventors: Kazuhiko SUZUKI, Shoji YAGI
  • Neutral controller for automatic transmission
    Patent number: 6270443
    Abstract: The purpose of the present invention is to provide a neutral control method and a neutral controller for an automatic transmission which improves fuel efficiency and driving characteristics. According to the present invention, the neutral control method for the automatic transmission includes initiating the neutral control after every predetermined delay time, which begins with the neutral initiation conditions being satisfied, and continuing the neutral control as long as the neutral control initiation conditions remain satisfied. The neutral control ends when the neutral control initiation conditions are no longer satisfied.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: August 7, 2001
    Assignee: Suzuki Motor Corporation
    Inventors: Yoshiki Ito, Shoji Yagi