Patents by Inventor Dietlof Freiherr von Arnim

Dietlof Freiherr von Arnim 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).

  • Bellows element
    Patent number: 4340089
    Abstract: A tubular bellows element for fluids is provided which has concentric corrugations. The corrugations include flanks separated by spaces which narrow towards inner ends of the corrugations. The inner corrugation ends have a conical shape, and act as scales to increase the degree to which the ends of the bellows element can be moved with respect to each other. The inner ends also serve to provide an essentially smooth inner surface for the bellows element, minimizing both flow disturbance and the creation of turbulence.
    Type: Grant
    Filed: September 24, 1980
    Date of Patent: July 20, 1982
    Assignee: IWK Regler und Kompensatoren GmbH
    Inventors: Dietlof Freiherr von Arnim, Rolf Dahn