Patents by Inventor Yoshihide Namba

Yoshihide Namba 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).

  • Spark ignition two-cycle internal combustion engine with sub-combustion chamber
    Patent number: 5950592
    Abstract: A highly efficient spark ignition two-cycle internal combustion engine is provided which assures stable and excellent combustion over a wider operation region of the engine. The spark ignition two-cycle internal combustion engine includes a sub-combustion chamber, and a pressure accumulating chamber which is filled with compressed air. A switching valve is arranged for communicating the pressure accumulating chamber with the sub-combustion chamber. A fuel injecting device injects fuel into the pressure accumulating chamber. A control device controls the operations of the switching valve and the fuel injecting device.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: September 14, 1999
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yoshihiro Takada, Yuji Tsushima, Yoshihide Namba, Minoru Ueda, Hiroshi Yamashita, Hiroshi Tanaka