Patents by Inventor Tsugio Fukushima

Tsugio Fukushima 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).

  • Exhaust system of an internal combustion engine
    Patent number: 4060985
    Abstract: An exhaust system of an internal combustion engine especially adapted for use as a power source for a portable tool such as a chain saw, said exhaust system comprising a muffler enclosed within an engine casing and located within the passage of the cooling air flow for cooling the engine, and an exhaust gas dilution system consisting of an ejector connected to the outlet of said muffler and a diffuser disposed at such a position that the outlet of said ejector is opened into the inlet of said diffuser.
    Type: Grant
    Filed: March 11, 1976
    Date of Patent: December 6, 1977
    Assignee: Yanmar Diesel Engine Co., Ltd.
    Inventor: Tsugio Fukushima