Patents by Inventor Randall M. Garrett

Randall M. Garrett 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 circuit for high current brushes in a dynamoelectric machine
    Patent number: 4283651
    Abstract: A switching circuit electrically connected to a brush and collector bar of a DC dynamoelectric machine utilizing a high current rectifier and a source of electromotive source which produces a current in the circuit which is generally equal to the current flowing between the brush and the collector bar and which can be forced to zero as the brush separates from the collector bar to reduce degradation of the trailing edges of the brushes and collector bars and improve the machine efficiency.
    Type: Grant
    Filed: October 25, 1979
    Date of Patent: August 11, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: George T. Hummert, Randall M. Garrett, Roy D. Schultz