Patents by Inventor Willi Brosche

Willi Brosche 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: 5095610
    Abstract: A method of manufacturing and winding stator core stacks intended for electric motors with internal rotors. Identical sectors are punched and stacked from a sheet metal strip and have spaced pole shoe elements extending radially from a flux return element or core with their free ends projecting inward. The pole shoe elements are given a winding. During the punching process, the pole shoe elements and the flux return element or core are separated from one another and stacked individually, the pole shoe elements being held by an inner ring also punched from the sheet metal strip. Thereafter, windings are applied and finally the wound pole shoes are assembled with the return element to form the stator.The process is especially suitable for manufacturing stators for low-power and miniature motors (less than 1 kW).
    Type: Grant
    Filed: August 29, 1990
    Date of Patent: March 17, 1992
    Assignee: Gebruder Buhler Nachfolger GmbH
    Inventors: Ulrich Schultz, Willi Brosche