Patents by Inventor Lothar Romberg

Lothar Romberg 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).

  • Multi-part rotor shaft for small electric motors
    Patent number: 5252879
    Abstract: A rotor for an electric motor includes a rotor lamina stack defining a throughgoing opening and having opposite end faces; and a rotor shaft which is composed of three parts: a central shaft portion received in the central opening and having first and second ends projecting from the rotor lamina stack beyond the respective opposite end faces; a first separate shaft stub received on the first end of the central shaft portion; and a second separate shaft stub received on the second end of the central shaft portion.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: October 12, 1993
    Assignee: Licentia Patent-Verwaltungs-GmbH
    Inventors: Lothar Romberg, Jurgen Henke