Patents by Inventor Kam-Fung Yan

Kam-Fung Yan 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).

  • Patent number: 9996071
    Abstract: A system for use in a device assembly process to aid in performing at least one device assembly operation is disclosed. The system may comprise: a moveable slider moveably coupled to a slider base to move components of the device in the assembly process; and an electronics module coupled to an end portion of the slider base. The electronics module may comprise: a driver to provide driver output to the moveable slider; and a controller that includes the driver to transmit control signals through the driver to control movement of the moveable slider. The moveable slider may move components of the device in the assembly process in which at least one device assembly operation is performed.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: June 12, 2018
    Assignee: Western Digital Technologies, Inc.
    Inventors: Jambunathan Vangal-Ramamurthy, Kam Fung Yan
  • Publication number: 20150370238
    Abstract: A system for use in a device assembly process to aid in performing at least one device assembly operation is disclosed. The system may comprise: a moveable slider moveably coupled to a slider base to move components of the device in the assembly process; and an electronics module coupled to an end portion of the slider base. The electronics module may comprise: a driver to provide driver output to the moveable slider; and a controller that includes the driver to transmit control signals through the driver to control movement of the moveable slider. The moveable slider may move components of the device in the assembly process in which at least one device assembly operation is performed.
    Type: Application
    Filed: June 24, 2014
    Publication date: December 24, 2015
    Inventors: JAMBUNATHAN VANGAL-RAMAMURTHY, KAM FUNG YAN
  • Patent number: 5991112
    Abstract: A servotrack writing apparatus (10) for use on computer disk drive workpieces (12). A writer controller (58) puts the writing apparatus (10) in the role of master to direct the workpiece (12) as a slave to position its read-write head (36) and to write the servotracks. A tracking section (54) provides a modulated light beam (72) from which a reflected portion is detected by a bi-cell photo sensor (70) and processed in the writer controller (58) to determine the position of a thru-hole (40) or a detection region (42) in the actuator arm (24) of the workpiece (12). The writer controller (58) may use a lock-in amplifier (102, 104) for the processing the reflected portion of the light beam (72). A reference arm (44) is locked and moved in a synchronous relationship with the actuator arm (24).
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: November 23, 1999
    Assignee: Excel Precision
    Inventors: Hubert Song, John C. Tsai, Mervyn L. Hopson, Kam-Fung Yan, Jean Chi