Patents by Inventor Fumikazu Hirasawa

Fumikazu Hirasawa 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).

  • Engine operated machine
    Patent number: 9068504
    Abstract: An engine-operated device includes a dust separating device. An air inlet provided on a first end side of the dust separating device. A first discharge opening is provided in the lateral surface on a second end side of the longitudinal direction, and a second discharge opening is provided to be separated from the first discharge opening. A first connecting passage is connected between the first discharge opening and the rotor cover of a magneto-rotor, and a second connecting passage is connected between an upstream side of an air cleaner case and the second discharge opening.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: June 30, 2015
    Assignee: HITACHI KOKI CO., LTD.
    Inventors: Tomomasa Nishikawa, Fumikazu Hirasawa
  • ENGINE-OPERATED MACHINE
    Publication number: 20130291810
    Abstract: An engine-operated device includes a dust separating device. An air inlet provided on a first end side of the dust separating device. A first discharge opening is provided in the lateral surface on a second end side of the longitudinal direction, and a second discharge opening is provided to be separated from the first discharge opening. A first connecting passage is connected between the first discharge opening and the rotor cover of a magneto-rotor, and a second connecting passage is connected between an upstream side of an air cleaner case and the second discharge opening.
    Type: Application
    Filed: December 27, 2011
    Publication date: November 7, 2013
    Applicant: HITACHI KOKI CO., LTD.
    Inventors: Tomomasa Nishikawa, Fumikazu Hirasawa
  • Engine
    Patent number: D623197
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: September 7, 2010
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Satoshi Hotta, Tomoyuki Kawahara, Takahiro Hirai, Fumikazu Hirasawa, Takamoto Horiuchi, Masanori Okada, Shingo Kosugi