Patents by Inventor Tokuichi Aoyama

Tokuichi Aoyama 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).

  • Cooling system for V-shaped, forced air-cooled engine
    Patent number: 4204486
    Abstract: A V-shaped, forced air-cooled engine includes a radial flow cooling fan mounted in front of the crankcase, within a housing containing air passageways leading to the cylinders on the opposite sides of the engine. The air passageways are constructed so as to assure the same amount of cooling air intake for each cylinder, the threshold areas of each passageway being provided with rounded surfaces shaped so as to assure a minimum of hissing sound and other noise caused by the moving, intake airstream.
    Type: Grant
    Filed: April 5, 1978
    Date of Patent: May 27, 1980
    Assignee: Kubota, Ltd.
    Inventors: Itsusuke Nakagawa, Tokuichi Aoyama