Patents by Inventor Siegfried Hafele

Siegfried Hafele 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: 5063634
    Abstract: In a floor nozzle for a vacuum cleaner the nozzle housing is provided with a substantially closed bottom, and it has in its upper housing portion a lockable opening, through which the suction chamber and the mechanical driving members of the cleaning means are accessible when the floor nozzle is in the operating position. The opening is locked by a cover which is hinged on the forward front face of the nozzle housing.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: November 12, 1991
    Assignee: Progress Elektrogerate GmbH
    Inventors: Siegfried Hafele, Gernot Jacob