Patents by Inventor Dirk WOLTER

Dirk WOLTER 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).

  • Device discharging ground currents, particularly in wind turbines
    Patent number: 10109969
    Abstract: Devices for discharging ground currents, more particularly in wind turbines, from electrical machines. The devices have a grounding ring mounted on a rotor of the electrical machine and a sliding contact connectable to ground and that is in contact with the grounding ring. The sliding contact element has a carbon brush with a bulk density between 1.1 and 1.4 g/cm3, and the carbon brush contains a metal inclusions composed of silver, the silver proportion being between 1 and 8%.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: October 23, 2018
    Assignee: PANTRAC GMBH
    Inventors: Manfred Faber, Bernd Kinast, Wolfgang Vesper, Dirk Wolter
  • DEVICE FOR DIVERTING EARTH CURRENTS, MORE PARTICULARLY IN WIND TURBINES
    Publication number: 20160134072
    Abstract: The invention relates to a device for discharging ground currents, more particularly in wind turbines, from electrical machines, comprising a grounding ring mounted on a rotor of the electrical machine and a sliding contact which is connected to ground and is in contact with the grounding ring. The sliding contact element has a carbon brush with a bulk density between 1.1 and 1.4 g/cm3, and the carbon brush contains a metal inclusions composed of silver, the silver proportion being between 1 and 8%.
    Type: Application
    Filed: June 25, 2014
    Publication date: May 12, 2016
    Applicant: PANTRAC GMBH
    Inventors: Manfred FABER, Bernd KINAST, Wolfgang VESPER, Dirk WOLTER