Patents by Inventor Hirokazu Araya

Hirokazu Araya 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).

  • Shovel
    Patent number: 6789335
    Abstract: An excavator in which a generator is driven by an engine as a power source. Electric motors are driven by electric power supplied from the generator, and a lower traveling body, an upper turning body, and operating parts of an excavation attachment are operated by the electric motors.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: September 14, 2004
    Assignee: Kobelco Construction Machinery Co., Ltd.
    Inventors: Hideki Kinugawa, Masayuki Komiyama, Hirokazu Araya, Masayuki Kagoshima
  • Capacitor-equipped working machine
    Patent number: 6635973
    Abstract: A working machine, such as an excavator, provided with a condenser, capable of satisfying condensing conditions required for various works, while minimizing the condensers and maintaining a light-weight. The working machine includes a generator and at a an electrically-operated actuator for generating power for operating a work member by electric power generated by the generator. Further, as for charging-discharging electric power, a plurality of kinds of condensers are provided, and the condensers used are selectively switched according to power required, work contents, or the like.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: October 21, 2003
    Assignee: Kobelco Construction Machinery Co., Ltd.
    Inventors: Masayuki Kagoshima, Hirokazu Araya, Hideki Kinugawa, Masayuki Komiyama