Patents by Inventor Ryouhei Hosaka

Ryouhei Hosaka 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).

  • Sealing device and rolling bearing apparatus
    Patent number: 8226298
    Abstract: This sealing device has an annular metal core portion and an annular elastic portion. The elastic portion has a thick portion and a thin portion which extends from the thick portion in an axial direction of the elastic portion and has a thinner thickness in a radial direction than the thick portion. A fixed lip is provided on an inner peripheral surface of the thick portion, and a sliding lip is provided on an inner peripheral surface of the thin portion.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: July 24, 2012
    Assignee: JTEKT Corporation
    Inventors: Ryouhei Hosaka, Kunio Higuchi, Masahide Sunagawa
  • Sealing Bearing
    Publication number: 20100002971
    Abstract: An annular elastic portion is secured to an annular metal core portion. A through hole is provided which penetrates the metal core portion and the elastic portion in a radial direction. A porous member which has the properties of allowing free passage of air while inhibiting the passage of water and oil therethrough is secured to an outer peripheral surface of the metal core portion so as to completely block a radially outer opening of the through hole. An canopy member having a cover plate located on a radially outer side of the porous member is secured to the outer peripheral surface of the metal core portion.
    Type: Application
    Filed: October 23, 2007
    Publication date: January 7, 2010
    Applicants: JTEKT CORPORATION, KOYO SEALING TECHNO CO., LTD.
    Inventors: Ryouhei Hosaka, Kazuya Fujimoto, Masahide Sunagawa, Toshiaki Fujikawa
  • Sealing device and rolling bearing apparatus
    Publication number: 20090257699
    Abstract: This sealing device has an annular metal core portion and an annular elastic portion. The elastic portion has a thick portion and a thin portion which extends from the thick portion in an axial direction of the elastic portion and has a thinner thickness in a radial direction than the thick portion. A fixed lip is provided on an inner peripheral surface of the thick portion, and a sliding lip is provided on an inner peripheral surface of the thin portion.
    Type: Application
    Filed: October 23, 2007
    Publication date: October 15, 2009
    Inventors: Ryouhei Hosaka, Kunio Higuchi, Masahide Sunagawa