Patents by Inventor Wilhelm Helling

Wilhelm Helling 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).

  • Publication number: 20110215044
    Abstract: A rotatable separator drum includes a vertical rotating axis of rotation and at least one flow channel having an inlet opening and an outlet opening. Also included is at least one retaining dam arranged in the at least one flow channel in a region between the inlet opening and the outlet opening.
    Type: Application
    Filed: June 25, 2008
    Publication date: September 8, 2011
    Inventors: Wilfried MacKel, Thomas Bathelt, Ludger Thiemann, Kathrin Quiter, Andreas Penkl, Jürgen Linnemann, Thomas Kleimann, Jürgen Starke, Wilhelm Helling, Bärbel Helling, Stephan Helling, Tobias Helling
  • Patent number: 5468431
    Abstract: A method for preparing a mixture of plastics that are incompatible in view of processing in a shaping process, such as by extrusion, characterized by providing an initial mixture of a first part which is essentially composed of uniform material in view of a group of chemical substances, and a second part, separating the first part from the second part, processing the second part to enlarge or modify the surfaces of the constituents of the second part, then recombining the first and second parts into a final mixture, with the second part being essentially uniformly distributed in the first part of the mixture so that an essentially uniform product will occur when processing the mixture in a shaping process. The invention is also directed to a mixture manufactured by this method.
    Type: Grant
    Filed: July 2, 1992
    Date of Patent: November 21, 1995
    Assignee: Wilhelm Helling
    Inventor: Wilhelm Helling
  • Patent number: 4712507
    Abstract: Apparatus for the application of a primer to a plastic profile or the like, characterized by a vat comprising sealing elements provided with clearances for the passage of the plastic profile, accepting a fibrous web material (8) to be saturated with the primer to be applied, and provided with means (6,7) for saturating the fibrous web material (8) with the primer, with means for pressing the fibrous web material against the plastic profile, and with an outlet opening (2).
    Type: Grant
    Filed: February 27, 1986
    Date of Patent: December 15, 1987
    Inventor: Wilhelm Helling