Patents by Inventor Toshimichi Kumagai

Toshimichi Kumagai 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).

  • Auto choke device for an engine
    Patent number: 8113166
    Abstract: An auto choke device for an engine includes a choke valve for varying the opening of an intake passage of the engine, and a starter motor for starting the engine. Upon activation of the starter motor, the choke valve starts valve opening motion from a fully closed position. The choke valve continues the valve opening motion at a certain valve opening speed until it achieves a start opening set based on the temperature of the engine.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: February 14, 2012
    Assignees: Kyoto Denkiki Co., Ltd., Yamaha Motor Power Products Kabushiki Kaisha
    Inventors: Toshimichi Kumagai, Masanobu Yamamoto, Shinichi Kajiya
  • ENGINE
    Publication number: 20080245331
    Abstract: An engine includes a choke valve for varying the opening of an intake passage. When a variation in an engine operating state per unit time during the operation of the engine becomes a predetermined value or greater, the choke valve is automatically moved to the fully open position to thereby bring the engine back to the normal operating state immediately.
    Type: Application
    Filed: July 10, 2007
    Publication date: October 9, 2008
    Applicants: Kyoto Denkiki Co., LTD, Yamaha Motor Power Products Kabushiki Kaisha
    Inventors: Toshimichi Kumagai, Masanobu Yamamoto, Shinichi Kajiya
  • AUTO CHOKE DEVICE FOR AN ENGINE
    Publication number: 20080245339
    Abstract: An auto choke device for an engine includes a choke valve for varying the opening of an intake passage of the engine, and a starter motor for starting the engine. Upon activation of the starter motor, the choke valve starts valve opening motion from a fully closed position. The choke valve continues the valve opening motion at a certain valve opening speed until it achieves a start opening set based on the temperature of the engine.
    Type: Application
    Filed: July 10, 2007
    Publication date: October 9, 2008
    Applicants: Kyoto Deniki Co., LTD, Yamaha Motor Power Products Kabushiki Kaisha
    Inventors: Toshimichi Kumagai, Masanobu Yamamoto, Shinichi Kajiya