Patents by Inventor Hans R. Goebbels

Hans R. Goebbels 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).

  • Bobbin housing assembly in a sewing machine having at least one hook
    Patent number: 4998490
    Abstract: A sewing machine has at least one rotating top thread hook, the hook enclosing a bobbin housing which accommodates a bottom thread. A spring bar is mounted in the base of the sewing machine and has a free end for bearing against the bobbin housing. The free end of the spring bar is displaceable by the top thread as it is being looped. To prevent unwanted displacement or oscillation of the spring bar, a cam is disposed in the base closely adjacent to the free end of the spring bar. The cam prevents displacement of the free end beyond a predetermined range of displacement.
    Type: Grant
    Filed: June 2, 1989
    Date of Patent: March 12, 1991
    Assignee: Durkoppwerke GmbH
    Inventors: Hans R. Goebbels, Kurt Biermann, Gerhard Steppat, Wilhelm Stapel, Michael Rosemann, Klaus D. Seiler