Patents by Inventor John DeWitte Cottingham

John DeWitte Cottingham 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).

  • Aircraft power supply and method of operating the same
    Patent number: 8687394
    Abstract: An aircraft power supply for providing DC power with improved power quality characteristics. The aircraft power supply includes a transformer control system that can use closed-loop feedback from a DC power output to control switches that can short primary windings turns of a step-down transformer. By shorting turns in the primary, the transformer control system can control or manipulate the turns ratio in the transformer and compensate for decreases in the DC power output.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: April 1, 2014
    Assignee: Champion Aerospace LLC
    Inventors: John DeWitte Cottingham, James R. Berliner
  • AIRCRAFT POWER SUPPLY AND METHOD OF OPERATING THE SAME
    Publication number: 20100277960
    Abstract: An aircraft power supply for providing DC power with improved power quality characteristics. The aircraft power supply includes a transformer control system that can use closed-loop feedback from a DC power output to control switches that can short primary windings turns of a step-down transformer. By shorting turns in the primary, the transformer control system can control or manipulate the turns ratio in the transformer and compensate for decreases in the DC power output.
    Type: Application
    Filed: October 28, 2009
    Publication date: November 4, 2010
    Applicant: CHAMPION AEROSPACE, INC.
    Inventors: John DeWitte Cottingham, James R. Berliner