Patents Assigned to Yamaha Hatsudoki Kabushiki Kasha
  • Tumble control valve for intake port
    Patent number: 5359972
    Abstract: A number of embodiments of induction systems for internal combustion engines wherein a control valve arrangement is provided in the induction passage for selectively generating either or both of tumble and/or swirl to the intake charge in response to varying running conditions. Various types of control valve arrangements are disclosed as are systems for cooling the control valves and augmenting the flow pattern caused by the control valve.
    Type: Grant
    Filed: February 12, 1992
    Date of Patent: November 1, 1994
    Assignee: Yamaha Hatsudoki Kabushiki Kasha
    Inventor: Yoshiharu Isaka
  • Golf car
    Patent number: D395023
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: June 9, 1998
    Assignee: Yamaha Hatsudoki Kabushiki Kasha
    Inventor: Akihiko Hikida