Patents by Inventor Futoshi HATTORI

Futoshi HATTORI 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).

  • Patent number: 11125321
    Abstract: A gear shift control device for an automatic transmission device includes a transmission including an output unit setting and outputting a target value of the hydraulic pressure to the hydraulic control device. The output unit, when the shift stage is changed from a shift stage to another, increases the target value for a first friction coupling portion in the decoupled state in the shift stage to a first value, reduces to a second value, increases to a third value after the value is reduced to the second value, sets to a fourth value after the value is increased to the third value, and sets to a fifth value after the target value is set to the fourth value, and the output unit sets the fourth value according to magnitude of input torque to the transmission.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: September 21, 2021
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Koji Harada, Futoshi Hattori, Kenji Aoki
  • Patent number: 11118677
    Abstract: A transmission control device is used in an automatic transmission device including a transmission gear having friction coupling portions that are changed between a coupled state and an uncoupled state, and configuring transmission stages corresponding to a combination of the coupled state and the uncoupled state, and a hydraulic control device. The device includes: a determination unit determining a change in the transmission stage; and an output unit setting a target value of the hydraulic pressure, and outputting the target value to the hydraulic control device. In a case where one transmission stage is changed to another, the output unit increases the target value to a first value for a first friction coupling portion in the uncoupled state in the one transmission stage, thereafter, to a second value smaller than the first value and maintaining the uncoupled state, and thereafter, to a third value greater than the second value.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: September 14, 2021
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Koji Harada, Futoshi Hattori, Koichi Saito, Kenji Aoki
  • Publication number: 20200362961
    Abstract: A gear shift control device for an automatic transmission device includes a transmission including an output unit setting and outputting a target value of the hydraulic pressure to the hydraulic control device. The output unit, when the shift stage is changed from a shift stage to another, increases the target value for a first friction coupling portion in the decoupled state in the shift stage to a first value, reduces to a second value, increases to a third value after the value is reduced to the second value, sets to a fourth value after the value is increased to the third value, and sets to a fifth value after the target value is set to the fourth value, and the output unit sets the fourth value according to magnitude of input torque to the transmission.
    Type: Application
    Filed: April 28, 2020
    Publication date: November 19, 2020
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Koji HARADA, Futoshi HATTORI, Kenji AOKI
  • Publication number: 20200362960
    Abstract: A transmission control device is used in an automatic transmission device including a transmission gear having friction coupling portions that are changed between a coupled state and an uncoupled state, and configuring transmission stages corresponding to a combination of the coupled state and the uncoupled state, and a hydraulic control device. The device includes: a determination unit determining a change in the transmission stage; and an output unit setting a target value of the hydraulic pressure, and outputting the target value to the hydraulic control device. In a case where one transmission stage is changed to another, the output unit increases the target value to a first value for a first friction coupling portion in the uncoupled state in the one transmission stage, thereafter, to a second value smaller than the first value and maintaining the uncoupled state, and thereafter, to a third value greater than the second value.
    Type: Application
    Filed: March 13, 2020
    Publication date: November 19, 2020
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Koji HARADA, Futoshi HATTORI, Koichi SAITO, Kenji AOKI