Patents by Inventor Joseph Heng Tung Lau

Joseph Heng Tung Lau 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).

  • Damper design on pivot bearing shaft by vibration reduction
    Patent number: 6801386
    Abstract: A pivot cartridge assembly with improved resonance characteristics. One end of the pivot bearing shaft is mounted to the base of the disc drive, and the other end is secured to the cover of the disc drive in such a manner that the resonance characteristics of the pivot bearing assembly is improved in both the axial and radial direction of the pivot bearing shaft.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: October 5, 2004
    Assignee: Seagate Technology LLC
    Inventors: Jierapipatanakul Niroot, Andre Yew Loon Liem, Mo Xu, Joseph Heng Tung Lau, Michael Joo Chiang Toh
  • Actuator with reinforced voice coil
    Publication number: 20010053048
    Abstract: An actuator includes a coil support that is integral with the hub. The support includes a flange disposed between two support arms. Joining the flange to the hub is a base that defines a groove in which resides a proximal leg of a voice coil. The voice coil is attached to the flange and the support arms, as well as to the base.
    Type: Application
    Filed: June 18, 2001
    Publication date: December 20, 2001
    Inventors: Jierapipatanakul Niroot, Andre Liem, Chee Wai Seetoh, Joseph Heng Tung Lau, Xiong Liu
  • Apparatus for isolating vibration in pivot bearing assemblies
    Patent number: 6256173
    Abstract: An apparatus for isolating vibration in pivot bearing assemblies that is incorporated in a standard pivot bearing assembly without requiring modification of the pivot bearing assembly. Washers are used between the pivot bearing assembly and the base plate of a disc drive upon which the assembly is mounted. In addition, a second washer is positioned on the shaft of the assembly and is held in place by a shoulder screw which fastens the assembly to the base plate.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: July 3, 2001
    Assignee: Seagate Technology LLC
    Inventors: Wai Onn Chee, Joseph Heng Tung Lau, Michael Joo Chiang Toh, Xiong Liu