Patents by Inventor Takuya TAKAMURA

Takuya TAKAMURA 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 and control method for automatic transmission, and non-transitory computer-readable medium
    Patent number: 11808349
    Abstract: The control device is configured to supply an offset current value to disengagement solenoids of disengagement-side friction engaging elements among a plurality of shift solenoids that control respective shift oil pressures applied to the plurality of friction engaging elements, and when a current gear position is a first speed position or a reverse position, decrease a current value to be supplied to at least one of the disengagement solenoids that are supplied with the offset current value to be lower than the offset current value.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: November 7, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventor: Takuya Takamura
  • CONTROL DEVICE AND CONTROL METHOD FOR AUTOMATIC TRANSMISSION, AND NON-TRANSITORY COMPUTER-READABLE MEDIUM
    Publication number: 20220299109
    Abstract: The control device is configured to supply an offset current value to disengagement solenoids of disengagement-side friction engaging elements among a plurality of shift solenoids that control respective shift oil pressures applied to the plurality of friction engaging elements, and when a current gear position is a first speed position or a reverse position, decrease a current value to be supplied to at least one of the disengagement solenoids that are supplied with the offset current value to be lower than the offset current value.
    Type: Application
    Filed: October 2, 2020
    Publication date: September 22, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventor: Takuya TAKAMURA
  • Control device and control method for continuously variable transmission
    Patent number: 9073537
    Abstract: A shift control device is mounted on a vehicle and provided with a shift control unit to control a speed ratio of a continuously variable transmission which continuously shifts and allows output of a rotational speed of a driving power source, wherein the shift control unit executes, based on a driving state of the vehicle, a first shift control for suppressing a change of the speed ratio and a second shift control for upshifting the speed ratio to a predetermined speed ratio, and suppresses a change of the speed ratio in the first shift control, followed by shifting the speed ratio to become lower before execution of the second shift control.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: July 7, 2015
    Assignee: JATCO LTD
    Inventors: Takuya Takamura, Toshinari Ohde, Kiyokazu Tanaka
  • CONTROL DEVICE AND CONTROL METHOD FOR CONTINUOUSLY VARIABLE TRANSMISSION
    Publication number: 20130244833
    Abstract: A shift control device is mounted on a vehicle and provided with a shift control unit to control a speed ratio of a continuously variable transmission which continuously shifts and allows output of a rotational speed of a driving power source, wherein the shift control unit executes, based on a driving state of the vehicle, a first shift control for suppressing a change of the speed ratio and a second shift control for upshifting the speed ratio to a predetermined speed ratio, and suppresses a change of the speed ratio in the first shift control, followed by shifting the speed ratio to become lower before execution of the second shift control.
    Type: Application
    Filed: February 7, 2013
    Publication date: September 19, 2013
    Applicant: JATCO LTD
    Inventors: Takuya TAKAMURA, Toshinari OHDE, Kiyokazu TANAKA