Patents by Inventor Koji Funatsuki

Koji Funatsuki 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 of and apparatus for adjusting ignition timing by rotating the crankshaft with the coil and spark plug terminals disconnected from the ignition circuit
    Patent number: 4950996
    Abstract: Ignition timing of an internal combustion engine of an automotive vehicle is automatically adjusted by idling the engine with a distributor whose coil terminal and spark plug terminals are disconnected from ignition circuit and detecting an spurious ignition signal for a specified cylinder from the distributor. The distributor is turned with respect to the engine through an angle in accordance with a difference between a rotated angle of the crankshaft of the engine from a detection of the spurious ignition signal to a provision of a top dead center signal and a predetermined angle of the crankshaft for an expected ignition timing.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: August 21, 1990
    Assignee: Mazda Motor Corporation
    Inventors: Koji Funatsuki, Shigeru Hiramatsu