Patents by Inventor Kastuyoshi Fukaya

Kastuyoshi Fukaya 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).

  • Method for controlling the air-fuel ratio in a carburetor of an internal combustion engine
    Patent number: 4463724
    Abstract: A method for controlling the air-fuel ratio in a carburetor which prevents fuel from flowing into an air bleed passage at nearly fully closed position of the tapered needle valve fitted with the air bleed passage by controlling the step motor connected to the needle valve so as to maintain the minimum amount of bleed air at a constant level. In another aspect, at nearly fully closed position of the needle valve, this invention is effective to prevent fuel from flowing into the air bleed passage by continously driving the step motor in a direction of its fully closed position to axially vibrate the needle valve so that the minimum amount of bleed air may be maintained at a constant level.
    Type: Grant
    Filed: April 9, 1982
    Date of Patent: August 7, 1984
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventors: Kastuyoshi Fukaya, Akira Tokuda, Hitoshi Hirano