Patents by Inventor Duk-Rae Kim

Duk-Rae Kim 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).

  • Switching mechanism of circuit breaker for gas insulted switchgear
    Patent number: 6787725
    Abstract: A switching mechanism of a circuit breaker for a gas insulated switchgear is able to extinguish arc gas by changing a volume of a compressing chamber without increasing a stroke of a movable cylinder and without increasing required output power of an actuator.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: September 7, 2004
    Assignee: LG Industrial Systems Co., Ltd.
    Inventors: Duk-Rae Kim, Sung-Mo Kang
  • Switching mechanism of circuit breaker for gas insulted switchgear
    Publication number: 20030178392
    Abstract: A switching mechanism of a circuit breaker for a gas insulated switchgear is able to extinguish arc gas by changing a volume of a compressing chamber without increasing a stroke of a movable cylinder and without increasing required output power of an actuator.
    Type: Application
    Filed: March 14, 2003
    Publication date: September 25, 2003
    Applicant: LG INDUSTRIAL SYSTEMS CO., LTD.
    Inventors: Duk-Rae Kim, Sung-Mo Kang