Patents by Inventor Kook Hyeun Yang

Kook Hyeun Yang 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).

  • Ultra-thin spindle motor having groove formed on the outer circumferential surface of thrust bearing
    Patent number: 7586223
    Abstract: An ultra-thin spindle motor having a groove formed on the outer circumferential surface of a thrust bearing is disclosed. The present invention relates to an ultra-thin spindle motor among small-sized motor using a hydro dynamic pressure generating bearing and its object is to provide a spindle motor capable of stably driving without requiring a sleeve that was required to support a shaft in a radial direction in which a thrust bearing sleeve for coupling a hub and a thrust bearing is constructed and a radial hydro dynamic pressure generating groove is formed on the outer circumferential surface to thereby allow a radial hydro dynamic pressure to be generated and support a thrust bearing sleeve coupled integrally to the hub.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: September 8, 2009
    Assignees: A-Tech Solution Co., Ltd.
    Inventors: Noriaki Hishida, Kook Hyeun Yang
  • Ultra-Thin Spindle Motor Having Groove Formed on the Outer Circumferential Surface of Thrust Bearing
    Publication number: 20080157617
    Abstract: An ultra-thin spindle motor having a groove formed on the outer circumferential surface of a thrust bearing is disclosed. The present invention relates to an ultra-thin spindle motor among small-sized motor using a hydro dynamic pressure generating bearing and its object is to provide a spindle motor capable of stably driving without requiring a sleeve that was required to support a shaft in a radial direction in which a thrust bearing sleeve for coupling a hub and a thrust bearing is constructed and a radial hydro dynamic pressure generating groove is formed on the outer circumferential surface to thereby allow a radial hydro dynamic pressure to be generated and support a thrust bearing sleeve coupled integrally to the hub.
    Type: Application
    Filed: August 30, 2005
    Publication date: July 3, 2008
    Inventors: Noriaki Hishida, Kook Hyeun Yang