Patents by Inventor Uwe-Michael Steinmetz

Uwe-Michael Steinmetz 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).

  • Vacuum toilet
    Patent number: 6668389
    Abstract: A vacuum toilet comprises a toilet bowl (1) and a vacuum pipeline (3) which opens out into said toilet bowl. In the region of the opening (2), the vacuum line (3) has a cross-sectional narrowing in the form of a foreign-body barrier (5) which projects radially into the line interior. Alternatively provided is an insert pipe part (6) which can be inserted into the vacuum pipeline (3) in the region of the opening (2) and has an above-described foreign-body barrier (5).
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: December 30, 2003
    Assignee: Lufthansa Technik AG
    Inventors: Uwe-Michael Steinmetz, Karlheinz Steinmüller, Thomas Dittmar, Steffen Zang