Patents by Inventor Wilhelm Von Heesen

Wilhelm Von Heesen 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).

  • Wind tunnel with air vibration phase cancellation
    Patent number: 6155111
    Abstract: A wind tunnel consisting of a closed loop passageway including a test station and an impellor for producing an air stream through such passageway, a device for detecting the standing sound wave of such air stream at the test station and control means responsive to such standing sound wave for propagating at least one sound wave of a selected phase at a point in such air stream to nullify such standing sound wave.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: December 5, 2000
    Assignee: Audi AG
    Inventors: Gerhard Wickern, Steffen Wallmann, Wilhelm Von Heesen