Patents by Inventor Yun Ko

Yun Ko 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: 4656446
    Abstract: A current limiting circuit breaker characterized by pairs of stationary and movable contacts with the movable contacts connected in series; an arc-extinguishing chamber including arc guide rails associated with each pair of contacts and in side-by-side relationship; manually operable means for opening and closing the circuit through the contacts; current-limiting electromagnetic means for opening the contact; and linkage means between the manually operable and electromagnetic means for enabling opening of the contacts by the electromagnetic means without tripping the manually operable means.
    Type: Grant
    Filed: December 17, 1985
    Date of Patent: April 7, 1987
    Assignee: Westinghouse Electric Corp.
    Inventors: Yun-Ko N. Chien, John A. Wafer
  • Patent number: 4654614
    Abstract: A current limiting solenoid operated circuit breaker characterized by an arc quenching chamber having spaced arc guide rails along opposite sides of the chamber, stationary and movable contacts in an arcing zone adjacent to the chamber and electrically connected to corresponding guide rails, and a conductor around the arcing zone to generate a transverse magnetic field through an arc to drive the arc from the contacts and along the guide rails to the arc quenching chamber.
    Type: Grant
    Filed: March 4, 1985
    Date of Patent: March 31, 1987
    Assignee: Westinghouse Electric Corp.
    Inventors: Yun-Ko N. Chien, John A. Wafer, Walter V. Bratkowski