Patents by Inventor DIRK RAEBIGER

DIRK RAEBIGER 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).

  • Method and device for the electromagnetic stirring of electrically conductive fluids
    Patent number: 8944142
    Abstract: The invention relates to a method and to a device for the electromagnetic stirring of electrically conductive fluids in the liquid state and/or in the state of onsetting solidification of the fluid, using a rotating magnetic field that is produced in the horizontal plane of a Lorentz force. The aim is to achieve an intensive three-dimensional flow on the inside of the fluid for mixing in the liquid state up to the direct vicinity of solidifying fronts, and to simultaneously ensure an undisturbed, free surface of the fluid. The solution is to change the direction of rotation of the magnetic field rotating in the horizontal plane at regular time intervals in the form of a period duration, wherein the frequency of the directional change of movement of the magnetic field vector is adjusted such that in the state of mixing the liquid fluid a period duration is adjusted between two directional changes of the magnetic field during a time interval as a function of the adjustment time with the condition (I) 0.5·ti.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: February 3, 2015
    Assignees: Helmholtz-Zentrum Dresden-Rossendorf E.V., Technische Universitaet Dresden
    Inventors: Petr A. Nikrityuk, Sven Eckert, Dirk Raebiger, Bernd Willers, Kerstin Eckert, Roger Grundmann, Gunter Gerbeth
  • Method and device for the electromagnetic stirring of electrically conductive fluids
    Publication number: 20140290433
    Abstract: The invention relates to a method and to a device for the electromagnetic stirring of electrically conductive fluids in the liquid state and/or in the state of onsetting solidification of the fluid, using a rotating magnetic field that is produced in the horizontal plane of a Lorentz force. The aim is to achieve an intensive three-dimensional flow on the inside of the fluid for mixing in the liquid state up to the direct vicinity of solidifying fronts, and to simultaneously ensure an undisturbed, free surface of the fluid. The solution is to change the direction of rotation of the magnetic field rotating in the horizontal plane at regular time intervals in the form of a period duration, wherein the frequency of the directional change of movement of the magnetic field vector is adjusted such that in the state of mixing the liquid fluid a period duration is adjusted between two directional changes of the magnetic field during a time interval as a function of the adjustment time with the condition (I) 0.5·ti.
    Type: Application
    Filed: December 2, 2013
    Publication date: October 2, 2014
    Inventors: PETR A. NIKRITYUK, SVEN ECKERT, DIRK RAEBIGER, BERND WILLERS, KERSTIN ECKERT, ROGER GRUNDMANN, GUNTER GERBETH