Patents by Inventor Frank Dürschmied

Frank Dürschmied 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).

  • Linear motor
    Patent number: 6822349
    Abstract: A linear motor includes a secondary part (1) having several permanent magnets (4) disposed behind one another with alternating orientation of the polarity, or excitation windings. These permanent magnets (4) or excitation windings are wound helically around a rotation axis. Furthermore, there is provided a primary part (2) having a current-carrying winding disposed in parallel relationship to the permanent magnets (4) or excitation windings and arranged about the rotation axis such that a magnetic traveling field travels helically about the rotation axis.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: November 23, 2004
    Assignee: Ina Wälzlager Schaeffler oHG
    Inventors: Erich Lunz, Frank Dürschmied