Patents by Inventor Koji Nishiumi

Koji Nishiumi 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).

  • Construction machine and control method thereof
    Patent number: 8348806
    Abstract: A construction machine comprises an electric motor/generator coupled to an electricity accumulator, an engine, a transmission coupled to drive wheels, an epicyclic gearing for coupling an output shaft of the electric motor/generator, an output shaft of the engine, and an input shaft of the transmission, the engine torque and/or the generator torque being transmitted to drive wheels, a clutch for directly coupling two among the output shaft of the electric motor/generator, the output shaft of the engine, and the input shaft of the transmission, and a controller configured to, under a condition in which the clutch is in an off-state, control engine speed based on the degree to which the accelerator is open and on the amount of electricity in the electricity accumulator, to control shifting of the transmission gear position based on the accelerator opening degree, operational state of the generator, and the electricity amount.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: January 8, 2013
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Makoto Baino, Masaaki Higashi, Kenji Yoshimura, Makoto Azuma, Koji Nishiumi, Susumu Harada, Yunosuke Kobayashi, Nobuo Hamada, Hidekazu Matsuba
  • CONSTRUCTION MACHINE AND CONTROL METHOD THEREOF
    Publication number: 20110092334
    Abstract: A construction machine comprises an electric motor/generator coupled to an electricity accumulator, an engine, a transmission coupled to drive wheels, an epicyclic gearing for coupling an output shaft of the electric motor/generator, an output shaft of the engine, and an input shaft of the transmission, the engine torque and/or the generator torque being transmitted to drive wheels, a clutch for directly coupling two among the output shaft of the electric motor/generator, the output shaft of the engine, and the input shaft of the transmission, and a controller configured to, under a condition in which the clutch is in an off-state, control engine speed based on the degree to which the accelerator is open and on the amount of electricity in the electricity accumulator, to control shifting of the transmission gear position based on the accelerator opening degree, operational state of the generator, and the electricity amount motor/generator.
    Type: Application
    Filed: October 15, 2009
    Publication date: April 21, 2011
    Applicant: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Makoto Baino, Masaaki Higashi, Kenji Yoshimura, Makoto Azuma, Koji Nishiumi, Susumu Harada, Yunosuke Kobayashi, Nobuo Hamada, Hidekazu Matsuba