Patents by Inventor Jonathan K.J. Wong

Jonathan K.J. Wong 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).

  • Publication number: 20090261666
    Abstract: A spindle motor is provided for reducing or eliminating RRO and NRRO. Radial forces on the spindle motor are reduced or eliminated, and the net rotational torque is increased. Read and write heads may be placed increasingly closer to a memory storage disc surface, and are accurately aligned with the disc storage tracks. This allows increased track densities, and also allows for smaller discs and increased storage capacity of discs. In an aspect, a first stator tooth and a second stator tooth are positioned to generate substantially equal and opposite radial forces on the spindle motor. The first and second stator teeth are also simultaneously energized to cause the interaction of the stator with the magnet. In another aspect, the first stator tooth is positioned 180 degrees circumferentially about the stator from the second stator tooth, and axially above the second stator tooth.
    Type: Application
    Filed: April 17, 2008
    Publication date: October 22, 2009
    Inventors: Jonathan K.J. Wong, Choon Hoe Koh, Natarajan Swaminathan