Patents by Inventor Earl Dean Sandefur

Earl Dean Sandefur 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).

  • Removable switchboard transformer
    Patent number: 8218294
    Abstract: A removable transformer system is described. The system comprises a switchboard structure, a removable transformer moveable into and out of the switchboard structure, and a transformer mounting and supporting assembly for supporting the removable transformer. During operation of the system, the removable transformer is horizontally displaceable along the supporting.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: July 10, 2012
    Assignee: Eaton Corporation
    Inventors: Mitchell Dean Fretwell, Hector Gabriel Dumaine, Earl Dean Sandefur
  • Removable switchboard transformer
    Publication number: 20110228450
    Abstract: A removable transformer system is described. The system comprises a switchboard structure, a removable transformer moveable into and out of the switchboard structure, and a transformer mounting and supporting assembly for supporting the removable transformer. During operation of the system, the removable transformer is horizontally displaceable along the supporting.
    Type: Application
    Filed: March 17, 2010
    Publication date: September 22, 2011
    Inventors: Mitchell Dean Fretwell, Hector Gabriel Dumaine, Earl Dean Sandefur