Patents by Inventor Adrian E. Vandergrift

Adrian E. Vandergrift 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).

  • STARTER VOLTAGE REDUCING SYNCHRONOUS MACHINE
    Publication number: 20100253294
    Abstract: An electric power generation system has a synchronous machine, a starter excitation source and an exciter field driver. The starter excitation source is connected to the synchronous machine via multiple phase connections, and the exciter field driver is connected to the synchronous machine via a portion of the same phase connections. At least one of the phase connections is connected to each other phase connection via a transient voltage suppressor.
    Type: Application
    Filed: April 6, 2009
    Publication date: October 7, 2010
    Inventors: Vijay K. Maddali, Adrian E. Vandergrift, Deron J. Staas
  • SHORTED ROTATING DIODE DETECTION AND PROTECTION
    Publication number: 20090167257
    Abstract: An electric generator with a rotating diode fault detection device built in that operates by comparing a voltage buildup across the exciter DC supply with a preset threshold value and determining if a fault condition is present based on the comparison.
    Type: Application
    Filed: January 2, 2008
    Publication date: July 2, 2009
    Inventors: Vijay K. Maddali, Adrian E. Vandergrift, Sumita Tandon