Patents by Inventor Tetsuya Kirimura

Tetsuya Kirimura 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).

  • HOUSING FOR FLUID LUBRICATION BEARING APPARATUSES, A HOUSING FOR HYDRODYNAMIC BEARING APPARATUSES, AND A METHOD FOR PRODUCING THE SAME
    Publication number: 20110296896
    Abstract: A fluid lubrication bearing apparatus which can stably produce high bearing performance is provided at low costs. Moreover, a method for producing a housing for hydrodynamic bearing apparatuses which can improve the accuracy of form of the housing of this type at low costs is provided. In forming a housing 7 which has a cylindrical shape and comprises a fixing face 7c for fixing the outer circumferential surface 8b of a bearing sleeve 8, and axial circulation grooves 7d for bringing both end faces 8c, Sd of the bearing sleeve 8 into circulation on the inner periphery by forging, a groove molding portion 18a2 is provided on the outer circumference of a rod 18 which serves as a forming mold for the inner periphery of the housing 7, and the circulation grooves 7d are formed by forging with this groove molding portion 18a2.
    Type: Application
    Filed: August 16, 2011
    Publication date: December 8, 2011
    Applicant: NTN CORPORATION
    Inventors: Nobuyoshi Yamashita, Toshiyuki Mizutani, Tetsuya Kirimura, Kiyoshi Shimizu, Yoshitaka Kabata, Masatoshi Tanigawa, Eiichi Fujita, Koji Yamagata, Masato Utiumi
  • HOUSING FOR FLUID LUBRICATION BEARING APPARATUSES, A HOUSING FOR HYDRODYNAMIC BEARING APPARATUSES, AND A METHOD FOR PRODUCING THE SAME
    Publication number: 20090208153
    Abstract: A fluid lubrication bearing apparatus which can stably produce high bearing performance is provided at low costs. Moreover, a method for producing a housing for hydrodynamic bearing apparatuses which can improve the accuracy of form of the housing of this type at low costs is provided. In forming a housing 7 which has a cylindrical shape and comprises a fixing face 7c for fixing the outer circumferential surface 8b of a bearing sleeve 8, and axial circulation grooves 7d for bringing both end faces 8c, 8d of the bearing sleeve 8 into circulation on the inner periphery by forging, a groove molding portion 18a2 is provided on the outer circumference of a rod 18 which serves as a forming mold for the inner periphery of the housing 7, and the circulation grooves 7d are formed by forging with this groove molding portion 18a2.
    Type: Application
    Filed: January 11, 2006
    Publication date: August 20, 2009
    Applicant: NTN CORPORATION
    Inventors: Nobuyoshi Yamashita, Toshiyuki Mizutani, Tetsuya Kirimura, Kiyoshi Shimizu, Yoshitaka Kabata, Masatoshi Tanigawa, Eiichi Fujita, Koji Yamagata, Masato Utiumi