Patents by Inventor Paul U. Uibel

Paul U. Uibel 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).

  • Dust filter bag
    Patent number: 5226941
    Abstract: A duct filter bag (1) for a vacuum cleaner having a holding plate (2, 15) which has a tightly closed opening (4) for a pipe connection of a vacuum cleaner, the opening being adapted to be closed from the outside by a separate closure flap (5) which has an insertion region (8, 9, 11). In order to make the dust filter bag (1) more favorable in use, the closure flap (5) is hinged to the holding plate (2) laterally of its region of swing (V).
    Type: Grant
    Filed: March 19, 1992
    Date of Patent: July 13, 1993
    Assignee: Vorwerk & Co. Interholding GmbH
    Inventors: Paul U. Uibel, Betra Lehmann