Patents by Inventor Yoshihito Oyama

Yoshihito Oyama 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).

  • Motorcycle induction system
    Patent number: 6910546
    Abstract: An induction system for a motorcycle includes first and second intake air chambers. Each intake air chamber includes its own filter. One of the air chambers can be disposed on a side of the engine and the other air chamber can be disposed above the top of the engine.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: June 28, 2005
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Mitsuo Tsutsumi, Yoshihito Oyama, Kazuhisa Itou, Nobuhisa Ide
  • Motorcycle induction system
    Publication number: 20020185323
    Abstract: An induction system for a motorcycle includes first and second intake air chambers. Each intake air chamber includes its own filter. One of the air chambers can be disposed on a side of the engine and the other air chamber can be disposed above the top of the engine.
    Type: Application
    Filed: June 7, 2002
    Publication date: December 12, 2002
    Inventors: Mitsuo Tsutsumi, Yoshihito Oyama, Kazuhisa Itou, Nobuhisa Ide
  • Two-cycle engine with separate lubricating system
    Patent number: 5195481
    Abstract: A lubricating system for use in a two-cycle engine having at least one valve pivotally mounted through bearings in the sidewall of an intake passage of a carburetor is disclosed which supplies lubricating oil directly on the sidewall of the intake passage to lubricate the valve bearings in order to prevent corrosion and sticking of the valve. The lubricating oil is delivered into the intake passage directly on the sidewalls upstream of the bearings so that the lubricating oil flows along these walls to assure adequate flow to the bearings. The lubricating oil may be delivered into the intake passage by supplying the oil directly through at least one of the bearings of the valve.
    Type: Grant
    Filed: November 22, 1991
    Date of Patent: March 23, 1993
    Assignee: Sanshin Kogyo, KK
    Inventors: Yoshihito Oyama, Kenji Ikeda, Masami Ohara