Patents by Inventor Kouyou Suzuki

Kouyou Suzuki 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).

  • Method of injection molding a sealing member for a fluid dynamic bearing
    Patent number: 9512878
    Abstract: A weld line formed by injection molding of a sealing member is formed at a circumferential position out of deepest portions of axial grooves, which form thinned portions of the sealing member (optimally, in a region of a cylindrical surface between the axial grooves in a circumferential direction). Thus, the sealing member is prevented from being provided with parts having locally markedly low strength, and hence damage to be caused by press-fitting is prevented.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: December 6, 2016
    Assignee: NTN CORPORATION
    Inventors: Kouyou Suzuki, Hiroshi Niwa, Fuminori Satoji, Kimihiko Bito, Yoshiharu Inazuka
  • FLUID DYNAMIC BEARING DEVICE
    Publication number: 20140145366
    Abstract: A weld line formed by injection molding of a sealing member is formed at a circumferential position out of deepest portions of axial grooves, which form thinned portions of the sealing member (optimally, in a region of a cylindrical surface between the axial grooves in a circumferential direction). Thus, the sealing member is prevented from being provided with parts having locally markedly low strength, and hence damage to be caused by press-fitting is prevented.
    Type: Application
    Filed: January 30, 2014
    Publication date: May 29, 2014
    Inventors: Kouyou Suzuki, Hiroshi Niwa, Fuminori Satoji, Kimihiko Bito, Yoshiharu Inazuka
  • FLUID DYNAMIC BEARING DEVICE
    Publication number: 20120230618
    Abstract: A weld line formed by injection molding of a sealing member is formed at a circumferential position out of deepest portions of axial grooves, which form thinned portions of the sealing member (optimally, in a region of a cylindrical surface between the axial grooves in a circumferential direction). Thus, the sealing member is prevented from being provided with parts having locally markedly low strength, and hence damage to be caused by press-fitting is prevented.
    Type: Application
    Filed: November 24, 2010
    Publication date: September 13, 2012
    Applicant: NTN CORPORATION
    Inventors: Kouyou Suzuki, Hiroshi Niwa, Fuminori Satoji, Kimihiko Bito, Yoshiharu Inazuka
  • LUBRICANT DETERIORATION DETECTING DEVICE AND DETECTING DEVICE INCORPORATED BEARING ASSEMBLY
    Publication number: 20100157304
    Abstract: A lubricant deterioration detecting device has a light emitting unit and a light receiving unit so arranged as to define a gap therebetween for accommodating a lubricant forming an object to be detected, and a determining circuit for determining a light transmittance of the lubricant in reference to an output from the light receiving unit to thereby detect a status of deterioration of the lubricant.
    Type: Application
    Filed: January 16, 2007
    Publication date: June 24, 2010
    Applicant: NTN CORPORATION
    Inventors: Toru Takahashi, Akio Nakajima, Kazunari Maeda, Kouyou Suzuki