Patents by Inventor Akira Shibanaka

Akira Shibanaka 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).

  • Multiple cylinder internal combustion engine having mixture cut off means
    Patent number: 4296719
    Abstract: A multiple cylinder engine having an intake passage for each cylinder. A shut-off valve or valves are provided in the intake passage or passages leading to selected one or ones of cylinders downstream of the throttle valve. The shut-off valve is closed in idling operation so that the combustible mixture is totally supplied to the remainder of the cylinders to increase the mixture charge therein. The intake passage or passages leading to the selected cylinder or cylinders are supplied with air when the shut-off valves are closed so that the peak pressure in such cylinders is increased. The air supply is cut-off in deceleration in order for preventing the engine-brake effect from being weakened.
    Type: Grant
    Filed: September 20, 1979
    Date of Patent: October 27, 1981
    Assignee: Toyo Kogyo Co., Ltd.
    Inventors: Koichi Takahashi, Fumio Hinatase, Akira Shibanaka