Patents by Inventor Tooru Zenno

Tooru Zenno 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).

  • Clutch control device and vehicle
    Patent number: 7881847
    Abstract: An EEPROM of an ECU (engine control unit) stores regulation maps corresponding to a plurality of running modes (e.g., normal mode, swift mode and gentle mode). The regulation maps regulate the relationship between the clutch rotational speed difference and the target clutch position. When any one of the running modes is selected according to user intentions, the target clutch position is uniformly changed according to the running mode.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: February 1, 2011
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Tooru Zenno
  • Automatic shift control device and vehicle
    Patent number: 7673727
    Abstract: In a clutch engaging and disengaging operation at the time of a shift change, a state in which the clutch position of the clutch is at a specific value between a first clutch position at which a half clutch state finishes and a second clutch position at which the clutch is in a mechanical maximum disengaged state is maintained until completion of a gear change is detected by a gear position sensor. Therefore, even if a dog abutment state occurs between first gears with engaging projections and second gears with engaging recesses, the dog abutment can be resolved properly.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: March 9, 2010
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Tooru Zenno
  • Automatic shift control device and vehicle
    Publication number: 20070240955
    Abstract: In a clutch engaging and disengaging operation at the time of a shift change, a state in which the clutch position of the clutch is at a specific value between a first clutch position at which a half clutch state finishes and a second clutch position at which the clutch is in a mechanical maximum disengaged state is maintained until completion of a gear change is detected by a gear position sensor. Therefore, even if a dog abutment state occurs between first gears with engaging projections and second gears with engaging recesses, the dog abutment can be resolved properly.
    Type: Application
    Filed: August 31, 2006
    Publication date: October 18, 2007
    Inventor: Tooru Zenno
  • Clutch control device and vehicle
    Publication number: 20070244617
    Abstract: An EEPROM of an ECU (engine control unit) stores regulation maps corresponding to a plurality of running modes (e.g., normal mode, swift mode and gentle mode). The regulation maps regulate the relationship between the clutch rotational speed difference and the target clutch position. When any one of the running modes is selected according to user intentions, the target clutch position is uniformly changed according to the running mode.
    Type: Application
    Filed: August 31, 2006
    Publication date: October 18, 2007
    Inventor: Tooru Zenno