Patents by Inventor Wolfgang Burkle

Wolfgang Burkle 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).

  • Tension shaft for winding frames
    Patent number: 4436252
    Abstract: A tension shaft for machines for winding widths of sheet material wherein the outside diameter is variable is provided. The tension shaft includes a flexible tube wound thereabout in helical fashion which may be inflated by air fed into the central portion of the tension shaft. A valve for air feed discharge is provided to the central shaft. An air inlet from the central shaft to the flexible tube is provided. The air inlet is characterized by a screw member having an axial opening leading from the central shaft piece to a radial opening extending outwardly from the axial hole for directing air to the interior portion of the flexible tube.
    Type: Grant
    Filed: August 26, 1982
    Date of Patent: March 13, 1984
    Inventors: Wolfgang Burkle, Dieter Opitz