Patents by Inventor David Alan Abel

David Alan Abel 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).

  • Multi-layer transformer having electrical connection in a magnetic core
    Patent number: 6054914
    Abstract: A method, apparatus, and article of manufacture for a multi-layer transformer includes a plurality of layers having a magnetic core area disposed on each of the layers forming a magnetic core of the transformer having a primary winding disposed on at least one of the layers, and a secondary winding disposed on at least one of the layers. A plurality of interconnecting vias connect the primary winding between the layers, and a second plurality of interconnecting vias connect the secondary winding between the layers. The interconnecting vias are disposed proximate a center of the magnetic core of the transformer, thus, reducing the overall volume, size, weight, and cost of a transformer while meeting regulatory isolation safety requirements.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: April 25, 2000
    Assignee: Midcom, Inc.
    Inventors: David Alan Abel, Jay Emil Grabow, David James Levasseur, Donald Burnell Rigdon, Richard Miles Wetzel