Using Balls Patents (Class 720/705)
  • Patent number: 8166496
    Abstract: Disclosed is a spindle motor comprising: an integral turntable including: a table on which a rotating body to be installed, and an inner side wall and an outer side wall formed to be recessed upwards at a portion therebetween on a lower surface of the table so that a predetermined hollow is formed, a surface of thereof being formed slant; a ball cover for covering a ball inserted into the hollow and the hollow; a rotation shaft an upper portion of which is inserted into a center of the integral turntable; a bearing supporting a lower portion of the rotation shaft; a coil formed on an outside of the rotation shaft; and a magnet formed on an outside of the coil.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: April 24, 2012
    Assignee: LG Innotek Co. Ltd.
    Inventor: Jin Seung Yoo
  • Patent number: 8074238
    Abstract: Provided is a spindle motor. The spindle motor includes a rotatable shaft, a stator, a rotor, and a turntable. The stator is positioned around the shaft. The rotor includes a rotor yoke coupled to the shaft. The rotor is rotated with the shaft integratedly by a reaction with the stator. The turntable is coupled to the shaft. The rotor yoke and the turntable are coupled to each other and are fixed to the shaft.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: December 6, 2011
    Assignee: LG Innotek Co., Ltd.
    Inventor: Joon Keun Woo
  • Patent number: 7971213
    Abstract: Disclosed is a spindle motor comprising: an integral turntable including: a table on which a rotating body to be installed, and an inner side wall and an outer side wall formed to be recessed upwards at a portion therebetween on a lower surface of the table so that a predetermined hollow is formed, a surface of thereof being formed slant; a ball cover for covering a ball inserted into the hollow and the hollow; a rotation shaft an upper portion of which is inserted into a center of the integral turntable; a bearing supporting a lower portion of the rotation shaft; a coil formed on an outside of the rotation shaft; and a magnet formed on an outside of the coil.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: June 28, 2011
    Assignee: LG Innotek Co. Ltd.
    Inventor: Jin Seung Yoo
  • Patent number: 7461391
    Abstract: Disclosed is a spindle motor comprising: an integral turntable including: a table on which a rotating body to be installed, and an inner side wall and an outer side wall formed to be recessed upwards at a portion therebetween on a lower surface of the table so that a predetermined hollow is formed, a surface of thereof being formed slant; a ball cover for covering a ball inserted into the hollow and the hollow; a rotation shaft an upper portion of which is inserted into a center of the integral turntable; a bearing supporting a lower portion of the rotation shaft; a coil formed on an outside of the rotation shaft; and a magnet formed on an outside of the coil.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: December 2, 2008
    Assignee: LG Innotex Co. Ltd.
    Inventor: Jin Seung Yoo