Patents by Inventor Volk r Stegmann

Volk r Stegmann 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).

  • Method and device for diagnosing tank leaks using a reference measuring method
    Patent number: 6845652
    Abstract: In a method and a device for leak testing of a vessel, e.g., a tank venting system of a motor vehicle, a leak-tightness measurement is performed by introducing a positive pressure or partial vacuum and detecting the variation over time of a positive pressure or partial vacuum in the vessel, and a reference measurement is performed using a reference leak. A conclusion is drawn as to the presence of a leak in the vessel by comparing the results of the leak-tightness measurement and the reference measurement. To avoid faulty diagnoses, the positive pressure or partial vacuum during the leak-tightness measurement and the reference measurement is detected by using a single pressure measuring device.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: January 25, 2005
    Assignee: Robert Bosch GmbH
    Inventors: Volk r Stegmann, Thorsten Fritz, Martin Streib, Peter Wiltsch, Armin Hassdenteufel