Patents by Inventor Seigou Satou

Seigou Satou 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).

  • Cylinder head for internal combustion engine
    Patent number: 6209506
    Abstract: A cylinder head of a spark-ignition engine is divided into an upper cylinder head portion and a lower cylinder head portion by means of a division wall portion. An upper spark-plug hole is formed in the upper cylinder head portion, whereas a lower spark-plug hole is formed in the lower cylinder head portion. The relative position of lower spark-plug hole is based on the position of the spark plug screwed into a tapped hole formed in the lower cylinder head portion. The relative position of the upper spark-plug hole is based on engine parts mounted in the upper cylinder head. The axis of the upper spark-plug hole is thus designed to be offset from the axis of the lower spark-plug hole. Each of the upper and lower spark-plug holes has a tapered hollow portion in close vicinity to the division wall portion.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: April 3, 2001
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Seigou Satou