Patents by Inventor Lee Covington Robert

Lee Covington Robert 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).

  • Method and circuit for the protection of a thyristor
    Patent number: 6594130
    Abstract: Circuits and methods for protecting thyristors in a bridge configuration are provided. A circuit comprises a line reactor in series with the input of the bridge and the input of the diametric cell, two leg reactors each in series with a respective leg and an output of the diametric cell. Two snubber circuits in parallel with the two thyristors that comprise the diametric cell may also be used to protect the thyristors.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: July 15, 2003
    Assignee: General Electric Co.
    Inventors: Robert Gregory Wagoner, Lee Covington Robert, Brian Mathew Hamill
  • METHOD AND CIRCUIT FOR THE PROTECTION OF A THYRISTOR
    Publication number: 20030103305
    Abstract: Circuits and methods for protecting thyristors in a bridge configuration are provided. A circuit comprises a line reactor in series with the input of the bridge and the input of the diametric cell, two leg reactors each in series with a respective leg and an output of the diametric cell. Two snubber circuits in parallel with the two thyristors that comprise the diametric cell may also be used to protect the thyristors.
    Type: Application
    Filed: November 29, 2001
    Publication date: June 5, 2003
    Inventors: Robert Gregory Wagoner, Lee Covington Robert, Brian Mathew Hamill