Patents by Inventor Stefan Helmlinger

Stefan Helmlinger 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).

  • Winding overhang support of an electrical machine
    Patent number: 9225218
    Abstract: The winding overhang of the rotor of an electrical machine is subject to strong centrifugal forces during operation, especially when the machines run at high speed. The winding overhang support prevents the production of relative movements between the winding overhang and the rotor base. These movements result in strong mechanical stresses on the winding bars. The winding overhang support includes an inner ring and an outer ring between which the winding bars are arranged in the region of the winding overhang, the outer ring being shrunk on the inner ring and both the outer ring and the inner ring being interspaced from the lamination stack.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: December 29, 2015
    Assignee: Andritz Hydro GmbH
    Inventors: Alfred Lexer, Stefan Helmlinger
  • WINDING OVERHANG SUPPORT OF AN ELECTRICAL MACHINE
    Publication number: 20120223608
    Abstract: The winding overhang of the rotor of an electrical machine is subject to strong centrifugal forces during operation, especially when the machines run at high speed. The winding overhang support prevents the production of relative movements between the winding overhang and the rotor base. These movements result in strong mechanical stresses on the winding bars. The winding overhang support includes an inner ring and an outer ring between which the winding bars are arranged in the region of the winding overhang, the outer ring being shrunk on the inner ring and both the outer ring and the inner ring being interspaced from the lamination stack.
    Type: Application
    Filed: June 25, 2010
    Publication date: September 6, 2012
    Applicant: ANDRITZ HYDRO GMBH
    Inventors: Alfred Lexer, Stefan Helmlinger