Patents by Inventor Kyohei FUJIKURA

Kyohei FUJIKURA 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).

  • Internal combustion engine and motorcycle equipped with the engine
    Patent number: 9587719
    Abstract: An internal combustion engine includes a cam chain chamber accommodating a cam chain and a chain guide guiding the cam chain. The engine also includes a chain tensioner including a case main body, a plunger sliding in the case main body, a coil spring biasing the chain guide against the cam chain via the plunger, interlocking teeth located on a surface of the plunger, and an engaging portion engaged with the interlocking teeth and configured to inhibit the plunger from moving in a direction away from the chain guide. The engine also includes oil supply passages in an inner wall of the cylinder head and an inner wall of the cylinder body and configured to supply oil to the chain tensioner.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: March 7, 2017
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Takehiko Shiraoya, Kyohei Fujikura, Tadakatsu Hosokawa, Nobuyuki Miyoshi
  • INTERNAL COMBUSTION ENGINE AND MOTORCYCLE EQUIPPED WITH THE ENGINE
    Publication number: 20140349795
    Abstract: An internal combustion engine includes a cam chain chamber accommodating a cam chain and a chain guide guiding the cam chain. The engine also includes a chain tensioner including a case main body, a plunger sliding in the case main body, a coil spring biasing the chain guide against the cam chain via the plunger, interlocking teeth located on a surface of the plunger, and an engaging portion engaged with the interlocking teeth and configured to inhibit the plunger from moving in a direction away from the chain guide. The engine also includes oil supply passages in an inner wall of the cylinder head and an inner wall of the cylinder body and configured to supply oil to the chain tensioner.
    Type: Application
    Filed: May 20, 2014
    Publication date: November 27, 2014
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Takehiko SHIRAOYA, Kyohei FUJIKURA, Tadakatsu HOSOKAWA, Nobuyuki MIYOSHI