Patents by Inventor Norbert Graeber

Norbert Graeber 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).

  • Patent number: 5920130
    Abstract: An overhead line for electrical energy transmission, includes three phase conductors of a three-phase system. The three phase conductors are disposed vertically one above the other and define an upper phase conductor and a lower phase conductor. At least one additional compensation loop having a first conductor, a second conductor, and vertical connecting conductors surround the three phase conductors. The first conductor of the at least one additional compensation loop is disposed parallel to and above the upper phase conductor. The second conductor of the at least one additional compensation loop is disposed parallel to and below the lower phase conductor. The first and the second phase conductors are connected to one another via vertical connecting conductors. A compensation current is fed into the at least one compensation loop.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: July 6, 1999
    Assignee: ABB Research Ltd
    Inventors: Rolf Paschen, Gerd Fitterer, Helmut Boehme, Norbert Graeber