Patents by Inventor Tokuzi Muramatsu

Tokuzi Muramatsu 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).

  • Intake system for internal combustion engines
    Patent number: 4368698
    Abstract: Several embodiments of induction systems for internal combustion engines that improve charging efficiency over a widespread range, particularly at the lower speeds of the engine. Each embodiment includes a plurality of plenum chambers each of which communicates with the intake passage of the engine between the throttle valve and the served chamber. In one embodiment, the plenum chambers communicate with the induction system through separate branch passages. In other embodiments, the plenum chambers communicate with the induction system through each other.
    Type: Grant
    Filed: May 15, 1981
    Date of Patent: January 18, 1983
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Noritaka Matsuo, Kohichiro Takeuchi, Tokuzi Muramatsu