Patents by Inventor Aki Kodai

Aki Kodai 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).

  • Drive Cam and Valve Operating System in Engine
    Publication number: 20130291813
    Abstract: Provided are a drive cam having an improved wear resistant sliding surface that gives the drive cam enhanced durability and a valve operating system in an engine with such a drive cam. The drive cam of the present invention, made of a nitriding steel, has on its sliding surface, a hardened surface formed by nitrocarburizing wherein the hardened layer lies on top of the sliding surface. It is preferred that the driven mechanism used in combination with the drive cam has, in its sliding surface against which the drive cam slides, a chrome-plated layer and thereon a diamond-like carbon coating.
    Type: Application
    Filed: December 6, 2011
    Publication date: November 7, 2013
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Aki Kodai, Satoaki Ichi, Kozo Isano
  • Titanium alloy tappet, manufacturing method thereof, and jig used in manufacturing tappet
    Patent number: 7621244
    Abstract: A titanium alloy tappet that is slidable at a high speed is provided by covering shortcomings of lightweight and high-strength titanium alloy. A surface 1A of at least a slidable portion of the tappet 1 for use with a valve system is subjected to a carburizing process.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: November 24, 2009
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Yoshimoto Matsuda, Aki Kodai, Kozo Isano, Hideyuki Ogishi
  • Titanium alloy tappet, manufacturing method thereof, and jig used in manufacturing tappet
    Publication number: 20060243237
    Abstract: A titanium alloy tappet that is slidable at a high speed is provided by covering shortcomings of lightweight and high-strength titanium alloy. A surface 1A of at least a slidable portion of the tappet 1 for use with a valve system is subjected to a carburizing process.
    Type: Application
    Filed: March 15, 2006
    Publication date: November 2, 2006
    Inventors: Yoshimoto Matsuda, Aki Kodai, Kozo Isano, Hideyuki Ogishi