Patents by Inventor Shaobin Cheng

Shaobin Cheng 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).

  • Hybrid high voltage DC contactor with arc energy diversion
    Patent number: 7817382
    Abstract: A contactor may operate to interrupt current in a circuit while the circuit is operating under load. A shunt is provided to by-pass surge power current around contacts to reduce arcing. The shunt includes a solid-state switch that may be operated in a series of pulses during movement of the contacts. The pulse control unit may detect a potential for arcing and then provide for periodic pulsing operation of the shunt. Because the solid-state switch may operate discontinuously, the contactor may be constructed with a switch that is selected on a basis of its pulse rating.
    Type: Grant
    Filed: January 2, 2008
    Date of Patent: October 19, 2010
    Assignee: Honeywell International, Inc.
    Inventors: Wenjiang Yu, Zhenning Liu, Shaobin Cheng
  • HYBRID HIGH VOLTAGE DC CONTACTOR WITH ARC ENERGY DIVERSION
    Publication number: 20090168273
    Abstract: A contactor may operate to interrupt current in a circuit while the circuit is operating under load. A shunt is provided to by-pass surge power current around contacts to reduce arcing. The shunt includes a solid-state switch that may be operated in a series of pulses during movement of the contacts. The pulse control unit may detect a potential for arcing and then provide for periodic pulsing operation of the shunt. Because the solid-state switch may operate discontinuously, the contactor may be constructed with a switch that is selected on a basis of its pulse rating.
    Type: Application
    Filed: January 2, 2008
    Publication date: July 2, 2009
    Inventors: Wenjiang Yu, Zhenning Liu, Shaobin Cheng