Patents by Inventor Gerd Fitterer

Gerd Fitterer 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: 5965956
    Abstract: An overhead line for electrical energy transmission includes at least one phase conductor which receives a phase current which has a phase and an amplitude. A compensation loop surrounds the at least one phase conductor. A compensation current which has a phase and an amplitude is fed into the compensation loop by a driving voltage. The phase and the amplitude of the compensation current is set with respect to the phase and the amplitude of the phase current flowing in the at least one phase conductor such that a magnetic flux produced by the compensation current counteracts a magnetic flux produced by the phase current. At least one additional loop surrounds the at least one phase conductor connected to the compensation loop. The driving voltage for the compensation current is produced in the compensation loop and in the at least one additional loop. The compensation loop and the at least one additional loop define the at least one phase conductor into at least two main sections.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: October 12, 1999
    Assignee: ABB Research Ltd.
    Inventors: Helmut Boehme, Gerd Fitterer, Rolf Paschen, Bernd Smailus
  • 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