Patents by Inventor Takahiro Ikoma

Takahiro Ikoma 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).

  • Two cycle internal combustion engine
    Patent number: 4261305
    Abstract: A two cycle internal combustion engine is disclosed, which essentially comprises a cylinder consisting of a sleeve and a cylinder block housing the sleeve therein. The cylinder has a groove formed between the sleeve and the cylinder block and at least one lubricant outlet port having one end opened to the inside of the sleeve and the other end communicating with the groove. A lubricant inlet port is formed in a crankcase or an air-fuel intake passage of the carburetor connected to the crankcase, and is connected to the groove through a lubricant passage means including a check valve disposed therein.
    Type: Grant
    Filed: July 26, 1979
    Date of Patent: April 14, 1981
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Takahiro Ikoma