Patents by Inventor Yuuji Oku

Yuuji Oku 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).

  • Air intake system for engine
    Patent number: 7112160
    Abstract: In an intake system for an engine that includes plural throttle bodies 2 to 4 having throttle valves for changing an intake passage area, the plural throttle bodies 2 to 4 include manually driven side throttle bodies 2 to 4, which have manually driven side throttle valves 2b to 4b that are opened and closed by a throttle operation of a rider, and an electrically driven side throttle body 5, which has an electrically driven side throttle valve 5b that is opened and closed by an electric motor 11, and the intake system includes a valve opening control means 15 that controls an opening of the electrically driven side throttle valve 5b such that a specific output characteristic corresponding to an operating state of an engine is obtained.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: September 26, 2006
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Ichirou Yoda, Yuuji Oku, Hirokazu Fujita
  • Air intake system for engine
    Publication number: 20050153816
    Abstract: In an intake system for an engine that includes plural throttle bodies 2 to 4 having throttle valves for changing an intake passage area, the plural throttle bodies 2 to 4 include manually driven side throttle bodies 2 to 4, which have manually driven side throttle valves 2b to 4b that are opened and closed by a throttle operation of a rider, and an electrically driven side throttle body 5, which has an electrically driven side throttle valve 5b that is opened and closed by an electric motor 11, and the intake system includes a valve opening control means 15 that controls an opening of the electrically driven side throttle valve 5b such that a specific output characteristic corresponding to an operating state of an engine is obtained.
    Type: Application
    Filed: June 6, 2003
    Publication date: July 14, 2005
    Inventors: Ichirou Yoda, Yuuji Oku, Hirokazu Fujita