Patents by Inventor Steve Chung-Bun Lo

Steve Chung-Bun Lo 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).

  • Power operator for switchgear with manual features
    Patent number: 6025657
    Abstract: A power operator for switchgear and the like is provided that is capable of either power or manual operation without the necessity of any decoupling or mode selection. The power operator is compact and easily affixed over a manual operating shaft of switchgear. The manual drive capabilities are always coupled for operation without any backdriving of the power source. The power operator includes a drive output affixed to the switchgear operating shaft, a manual operating shaft, and an arrangement for selectively coupling a power-driven input to the switchgear operating shaft. In a specific arrangement, the control arrangement of the power operator senses the position of the drive output and also senses the current drawn by the drive source. When controlling switchgear having a stored energy mechanism, operating positions are detected by sensing the tripping of the stored energy mechanism via the sensed current through the drive source.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: February 15, 2000
    Assignees: S&C Electric Company, S&C Electric Canada Ltd.
    Inventors: Steve Chung-Bun Lo, Todd W. Klippel, Douglas B. Hill, Terrence S. Kerr
  • Power operator for switchgear with manual features
    Patent number: 5895987
    Abstract: A power operator for switchgear and the like is provided that is capable of either power or manual operation without the necessity of any decoupling or mode selection. The power operator is compact and easily affixed over a manual operating shaft of switchgear. The manual drive capabilities are always coupled for operation without any backdriving of the power source. The power operator includes a drive output affixed to the switchgear operating shaft, a manual operating shaft, and an arrangement for selectively coupling a power-driven input to the switchgear operating shaft. In a specific arrangement, the control arrangement of the power operator senses the position of the drive output and also senses the current drawn by the drive source. When controlling switchgear having a stored energy mechanism, operating positions are detected by sensing the tripping of the stored energy mechanism via the sensed current through the drive source.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: April 20, 1999
    Assignee: S&C Electric Company
    Inventors: Steve Chung-Bun Lo, Todd W. Klippel, Douglas B. Hill