Patents by Inventor Noritoshi Takekuma

Noritoshi Takekuma 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).

  • Motor grader
    Patent number: 8382641
    Abstract: A motor grader includes an engine, a torque converter, a drive wheel, an engine revolution detector, and a control unit. The torque converter, including a lock-up clutch, transmits driving force from the engine. The drive wheel is rotationally driven by the driving force from the engine. The engine revolution detector detects engine revolution. When the lock-up clutch is engaged, the control unit is configured to: maintain the engaged state of the lock-up clutch when the engine revolution is greater than a predetermined lock-up release revolution lower than a low idle revolution; and switch the lock-up clutch into a disengaged state when the engine revolution is less than or equal to the predetermined lock-up release revolution.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: February 26, 2013
    Assignee: Komatsu Ltd.
    Inventors: Kazuhito Nishimaki, Michihiro Aida, Noritoshi Takekuma, Osamu Kodama, Takafumi Takenaka
  • MOTOR GRADER
    Publication number: 20110118083
    Abstract: A motor grader includes an engine, a torque converter, a drive wheel, an engine revolution detector, and a control unit. The torque converter, including a lock-up clutch, transmits driving force from the engine. The drive wheel is rotationally driven by the driving force from the engine. The engine revolution detector detects engine revolution. When the lock-up clutch is engaged, the control unit is configured to: maintain the engaged state of the lock-up clutch when the engine revolution is greater than a predetermined lock-up release revolution lower than a low idle revolution; and switch the lock-up clutch into a disengaged state when the engine revolution is less than or equal to the predetermined lock-up release revolution.
    Type: Application
    Filed: July 9, 2009
    Publication date: May 19, 2011
    Applicant: KOMATSU LTD.
    Inventors: Kazuhito Nishimaki, Michihiro Aida, Noritoshi Takekuma, Osamu Kodama, Takafumi Takenaka