Patents by Inventor Minoru Akizuki

Minoru Akizuki 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).

  • Air suction devices for multicylinder engines
    Patent number: 4803961
    Abstract: An air suction device for a multicylinder engine comprises a first group of inlet passages each having one end connected to one of a first group of cylinders, a second group of inlet passages each having one end connected to one of a second group of cylinders, a surge chamber separated off by a partition-wall into first and second compartments for air expansion provided with a plurality of first openings each coupled with the other end of one of the first group of inlet passages and a plurality of second openings each coupled with the other end of one of the second group of inlet passages, respectively, and a valve unit including a body member forming an air passage and a closing valve disposed in the body member for closing selectively the air passage.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: February 14, 1989
    Assignee: Mazda Motor Corporation
    Inventors: Tetsuo Hiraoka, Shinji Seike, Kouichi Hatamura, Minoru Akizuki