Patents by Inventor Takeyuki Sakagami

Takeyuki Sakagami 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).

  • Lean combustion gas engine
    Patent number: 6209511
    Abstract: The present invention relates to a lean combustion gas engine which receives a drive output by means of supplying and combusting gas fuel in a main combustion chamber. The lean combustion engine of the present invention comprises: a main combustion chamber (1) which is surrounded by a piston (3), a cylinder (2) and a cylinder head (4); a precombustion chamber (30) equipped with a pilot fuel injection valve; and a spark plug (11) which serves as an ignition source for the fuel-air mixture within the main combustion chamber; wherein, the spark plug and pilot fuel injection valve-equipped precombustion chamber are provided in said cylinder head.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: April 3, 2001
    Assignee: Niigata Engineering Co., Ltd.
    Inventors: Satoru Goto, Yoshifumi Nishi, Sadao Nakayama, Takeyuki Sakagami