Patents by Inventor Thomas Gräb

Thomas Gräb 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).

  • Bushing-type transformer for a switch gear unit
    Patent number: 6987438
    Abstract: The invention relates to a bushing-type transformer (1) comprising a conductive element (5) forming the primary conductor, supporting a flat contact surface (7) on one end thereof and a plug-in contact element (8) on the other end thereof, whereby the plug-in contact element (8) is embodied in a rotationally symmetrical manner and the rotational axis is arranged parallel to the flat contact surface (7). Said transformer also comprises a secondary winding (6) which surrounds the conductive piece (5) in an annular manner. The conductive element (5) extends in a linear manner and the plug-in contact element (8) is arranged on the surface area of the conductive piece (5).
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: January 17, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventors: Martin Eiselt, Thomas Gräb