Patents by Inventor Tony Björkstrand

Tony Björkstrand 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).

  • Permanent magnet module and an electrical machine rotor including the module
    Patent number: 7687958
    Abstract: A permanent magnet module to be installed in a rotor includes at least two permanent magnets with the first magnetic pole on the first plane surface and the second magnetic pole on the second plane surface, and a cover at least partially enveloping the permanent magnets. The cover of the module is magnetically conductive and includes a top surface, substantially covering the first plane surface of the permanent magnet, and a bottom surface, substantially covering the second plane surface of the permanent magnet. The cover is at least partially open at the side surfaces of the permanent magnet. Also disclosed is a rotor for an electrical machine, the rotor having permanent magnets fitted into a corresponding module.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: March 30, 2010
    Assignee: ABB Oy
    Inventors: Petri Mäki-Ontto, Pekka Kanninen, Tony Björkstrand