Patents by Inventor Yukinori Kanaike

Yukinori Kanaike 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).

  • Steering rack comprising steel bar with rack teeth
    Patent number: 7662245
    Abstract: A steel bar for a steering rack that contains 0.50 to 0.60% by mass of C, 0.05 to 0.5% by mass of Si, 0.2 to 1.5% by mass of Mn, 0.0005 to 0.003% by mass of B, 0.005 to 0.05% by mass of Ti, 0.0005 to 0.1% by mass of Al, and 0.002 to 0.02% by mass of N is provided. Given D as a diameter of the steel bar, then the steel bar is adjusted in such a manner that quenched and tempered structures in a portion of the steel bar at a depth of D/4 from a surface satisfy conditions I), II), and III) as follows: I) a sum of a tempered bainitic structure and a tempered martensitic structure accounts for 30 to 100% in area percentage; II) a regenerated perlite structure accounts for 0 to 50% in area percentage; and III) a sum of the tempered bainitic structure, the tempered martensitic structure, and the regenerated perlite structure accounts for 50 to 100% in area percentage.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: February 16, 2010
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Atsuhiko Ohta, Makoto Kamei, Kazuhiro Watanabe, Yukinori Kanaike, Osamu Tsukamoto, Masakazu Ikeda, Gorou Anan, Hiroshi Itoziri
  • Steel bar for steering rack manufacturing method of the same, and steering rack usnig the same
    Publication number: 20070113698
    Abstract: A steel bar for a steering rack that contains 0.50 to 0.60% by mass of C, 0.05 to 0.5% by mass of Si, 0.2 to 1.5% by mass of Mn, 0.0005 to 0.003% by mass of B, 0.005 to 0.05% by mass of Ti, 0.0005 to 0.1% by mass of Al, and 0.002 to 0.02% by mass of N is provided. Given D as a diameter of the steel bar, then the steel bar is adjusted in such a manner that quenched and tempered structures in a portion of the steel bar at a depth of D/4 from a surface satisfy conditions I), II), and III) as follows: I) a sum of a tempered bainitic structure and a tempered martensitic structure accounts for 30 to 100% in area percentage; II) a regenerated perlite structure accounts for 0 to 50% in area percentage; and III) a sum of the tempered bainitic structure, the tempered martensitic structure, and the regenerated perlite structure accounts for 50 to 100% in area percentage.
    Type: Application
    Filed: May 27, 2004
    Publication date: May 24, 2007
    Inventors: Atsuhiko Ohta, Makoto Kamei, Kazuhiro Watanabe, Yukinori Kanaike, Osamu Tsukamoto, Masakazu Ikeda, Gorou Anan, Hiroshi Itoziri