Patents by Inventor Chikayoshi Murotani

Chikayoshi Murotani 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).

  • Axle bearing apparatus
    Publication number: 20100109424
    Abstract: An axle bearing apparatus includes a hub shaft including a wheel-mounting flange formed at its outer end portion, and a cylindrical portion formed on an inner side surface of the flange, a bearing portion press-fitted on the cylindrical portion of the hub shaft and including an inner ring, an outer ring and rolling elements disposed between the inner and outer rings, and a slinger having a through hole formed through its central portion. The through hole is fitted on the cylindrical portion such that an outer diameter of the slinger is generally equal to an outer diameter of the flange, and the slinger is press-clamped to the inner side surface of the flange by bolts press-fitted respectively in a plurality of bolt holes formed in the flange. An adhesive bonds the slinger to the flange.
    Type: Application
    Filed: January 7, 2010
    Publication date: May 6, 2010
    Applicant: JTEKT Corporation
    Inventors: Shigeru Inoue, Chikayoshi Murotani, Shigeaki Furusawa, Takumi Harada, Yutaka Koma
  • Seal assembly for hub flange and slinger
    Patent number: 7708353
    Abstract: An axle bearing apparatus includes a hub shaft including a wheel-mounting flange formed at its outer end portion, and a cylindrical portion formed on an inner side surface of the flange, a bearing portion press-fitted on the cylindrical portion of the hub shaft and including an inner ring, an outer ring and rolling elements disposed between the inner and outer rings, and a slinger having a through hole formed through its central portion. The through hole is fitted on the cylindrical portion such that an outer diameter of the slinger is generally equal to an outer diameter of the flange, and the slinger is press-clamped to the inner side surface of the flange by bolts press-fitted respectively in a plurality of bolt holes formed in the flange. O-rings are interposed between the flange and the slinger.
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: May 4, 2010
    Assignee: JTEKT Corporation
    Inventors: Shigeru Inoue, Chikayoshi Murotani, Shigeaki Furusawa, Takumi Harada, Yutaka Koma
  • Axle bearing apparatus
    Publication number: 20080174170
    Abstract: An axle bearing apparatus includes a hub shaft including a wheel-mounting flange formed at its outer end portion, and a cylindrical portion formed on an inner side surface of the flange, a bearing portion press-fitted on the cylindrical portion of the hub shaft and including an inner ring, an outer ring and rolling elements disposed between the inner and outer rings, and a slinger having a through hole formed through its central portion. The through hole is fitted on the cylindrical portion such that an outer diameter of the slinger is generally equal to an outer diameter of the flange, and the slinger is press-clamped to the inner side surface of the flange by bolts press-fitted respectively in a plurality of bolt holes formed in the flange. O-rings are interposed between the flange and the slinger.
    Type: Application
    Filed: August 13, 2007
    Publication date: July 24, 2008
    Applicant: JTEKT CORPORATION
    Inventors: Shigeru Inoue, Chikayoshi Murotani, Shigeaki Furusawa, Takumi Harada, Yutaka Koma