Patents by Inventor Nobumitsu Tanaka

Nobumitsu Tanaka 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).

  • Engine air intake system
    Patent number: 5551392
    Abstract: Disclosed is an apparatus for generating a tumble in a cylinder of a fuel injection engine in order to improve combustion. The apparatus comprises an air intake passage having a straight portion whose center line is approximately in parallel with a roof face of the combustion chamber on the exhaust valve side and a tumble control valve for generating a tumble in the cylinder. The tumble control valve is a flap valve or a butterfly valve for closing a second air intake passage and for opening a first air intake passage.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: September 3, 1996
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Toshio Yamaji, Nobumitsu Tanaka