Patents Assigned to Cheung Woh Technologies Ltd.
  • Patent number: 10022826
    Abstract: A method for forming a hard disk drive base plate with an extended height is described. The method may include forming an initial hard disk drive base plate, forming a filler shim, and forming a shroud. The method may also include joining the initial hard disk drive base plate, the filler shim, and the shroud to extend a height of walls of the formed initial hard disk drive base plate, and to form the hard disk drive base plate with the extended height.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: July 17, 2018
    Assignee: Cheung Woh Technologies Ltd.
    Inventors: Kung Ying Law, Yut Chai Loh
  • Patent number: 9536572
    Abstract: Certain exemplary aspects of the present disclosure are directed towards an apparatus in which a base deck and a forged base deck cover are coupled to one another, via a weld joint, to provide a hermetically sealed cavity within. The base deck includes an outer region, and the base deck cover includes a lip that interfaces with the outer region of the base deck to provide the weld joint. Similarly, the base deck is formed by an outer region of a base deck bottom portion interfacing with a lip of the shroud to form, via welding, the base deck.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: January 3, 2017
    Assignees: Seagate Technology LLC, Cheung Woh Technologies LTD
    Inventors: David Ray Lapp, Loh Yut Chai, Wolfgang Rosner, Law Kung Ying, Neal Frank Gunderson, Scott Vogel Mitzner, Krithika Kalyanasundaram
  • Patent number: 9522446
    Abstract: A method for forming a hard disk drive base plate with an extended height is described. The method may include forming an initial hard disk drive base plate, forming a filler shim, and forming a shroud. The method may also include joining the initial hard disk drive base plate, the filler shim, and the shroud to extend a height of walls of the formed initial hard disk drive base plate, and to form the hard disk drive base plate with the extended height.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: December 20, 2016
    Assignee: Cheung Woh Technologies Ltd.
    Inventors: Kung Ying Law, Yut Chai Loh
  • Patent number: 9481932
    Abstract: A method and apparatus for forming a hard disk drive base plate with a sequence of progressive forging operations is described. The method may include advancing an initial hard disk drive base plate cut from an extruded sheet through a plurality of stations of a transfer die assembly. The method may also include performing a sequence of forgings on the initial hard disk drive base plate to progressively form parts on a hard disk drive base plate.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: November 1, 2016
    Assignee: Cheung Woh Technologies Ltd.
    Inventor: Kung Ying Law
  • Patent number: 7849578
    Abstract: Numerous embodiments of a method to form a base plate for a hard disk drive are described. In one embodiment, a blank base plate is advanced through plurality of die stations and parts of the base plate are press worked to form a disk drive base plate. In one embodiment, the blank base plate may be press worked by stamping the base plate with a progressive die assembly. In an alternative embodiment, the blank base plate may be press worked by stamping the base plate with a transfer die assembly.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: December 14, 2010
    Assignee: Cheung Woh Technologies, Ltd.
    Inventor: Law Kung Ying
  • Patent number: 7546669
    Abstract: Numerous embodiments of a method to form a base plate for a hard disk drive are described. In one embodiment, a blank base plate is advanced through plurality of die stations and parts of the base plate are press worked to form a disk drive base plate. In one embodiment, the blank base plate may be press worked by stamping the base plate with a progressive die assembly. In an alternative embodiment, the blank base plate may be press worked by stamping the base plate with a transfer die assembly.
    Type: Grant
    Filed: June 8, 2004
    Date of Patent: June 16, 2009
    Assignee: Cheung Woh Technologies Ltd.
    Inventor: Law Kung Ying