Patents by Inventor Thomas Lohken

Thomas Lohken 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: 8129649
    Abstract: A method for Magnetic Arc welding for metallic materials wherein at least one of the workpieces to be welded has an open cross-section. The method comprises bracing the two workpieces and moving them together, wherein the open cross-section of one workpiece is bridged by a metallic auxiliary part to form a conducting closed region, and after the activation of a magnetic field of a magnet coil system and of the current required for welding, the workpieces are placed with a defined spacing and an electric arc is ignited, the magnetic field of the magnet coil system sets the electric arc in rotation in order to uniformly heat the end surfaces to be welded, and subsequently, the surfaces, which are to be welded, of the workpieces are pressed against one another.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: March 6, 2012
    Assignee: Georg Fischer Engineering AG
    Inventor: Thomas Lohken
  • Publication number: 20090294425
    Abstract: A method for Magnetarc welding for metallic materials wherein at least one of the workpieces to be welded has an open cross-section. The method comprises bracing the two workpieces and moving them together, wherein the open cross-section of one workpiece is bridged by means of a metallic auxiliary part to form a conducting closed region, and after the activation of a magnetic field of a magnet coil system and of the current required for welding, the workpieces are placed with a defined spacing and an electric arc is ignited, the magnetic field of the magnet coil system sets the electric arc in rotation in order to uniformly heat the end surfaces to be welded, and subsequently, the surfaces, which are to be welded, of the workpieces are pressed against one another.
    Type: Application
    Filed: June 1, 2009
    Publication date: December 3, 2009
    Applicant: GEORG FISCHER ENGINEERING AG
    Inventor: Thomas Lohken