Patents by Inventor Doug Marble

Doug Marble 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).

  • Useful improvements in the art of 3-phase electronic tap changer commutation device
    Patent number: 8207716
    Abstract: The invention is for a 3-phase electronic tap changer commutation device to be utilized in electronic regulators, and more particularly to 3-phase alternating current (AC) electronic tap-changing voltage, current or phase correcting regulators. The present invention provides a specific transformer winding topology and commutation technique that improves performance and reduces cost compared to conventional methods.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: June 26, 2012
    Assignee: Utility Systems Technologies, Inc.
    Inventors: Steven M. Raedy, Doug Marble, Erick Singleman
  • USEFUL IMPROVEMENTS IN THE ART OF 3-PHASE ELECTRONIC TAP CHANGER COMMUTATION DEVICE
    Publication number: 20090102438
    Abstract: The invention is for a 3-phase electronic tap changer commutation device to be utilized in electronic regulators, and more particularly to 3-phase alternating current (AC) electronic tap-changing voltage, current or phase correcting regulators. The present invention provides a specific transformer winding topology and commutation technique that improves performance and reduces cost compared to conventional methods.
    Type: Application
    Filed: October 24, 2008
    Publication date: April 23, 2009
    Applicant: Utility Systems Technologies, Inc.
    Inventors: Steven M. Raedy, Doug Marble, Erick Singleman