Patents by Inventor Nokuhiro Yamamoto

Nokuhiro Yamamoto 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).

  • Intake system for rotary piston engine
    Patent number: 4759324
    Abstract: An intake system for three-rotor type rotary piston engine having first, second and third engine sections, and three rotors, the rotors being in 120-degree phase difference in terms of eccentric shaft rotation, a first communicating passage for communicating the working chamber in which the compression stroke is proceeding in the first engine section and the working chamber in which the intake stroke is proceeding in the second engine section, a second communicating passage for communicating the working chamber in which the compression stroke is proceeding in the second engine section and the working chamber in which the intake stroke is proceeding in the third engine section, and a third communicating passage for communicating the working chamber in which the compression stroke is proceeding in the third engine section and the working chamber in which the intake stroke is proceeding in the third engine section, each communicating passage being provided with a valve for controlling the openings thereof in acc
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: July 26, 1988
    Assignee: Mazda Motor Corporation
    Inventors: Tatsuya Kita, Hiroshi Sasaki, Nokuhiro Yamamoto