Patents by Inventor Andre Ullrich

Andre Ullrich 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: 20030000715
    Abstract: A low-wear sealing ring, which assures a favorable sealing action that prevents the escape of lubricants from the transmission chamber of the machine tool and prevents the entry of dust into the transmission chamber, has a number of sealing lips (6, 7) that rest against a percussion bolt (3) in the machine tool. At least on its lateral flank oriented toward the machine, the sealing ring (4) is provided with one or more radially extending recesses (8, 9). This lends the sealing lips (6, 7) a high degree of flexibility, allowing them to easily follow the movements of the percussion bolt (3), as a result of which the sealing ring (4) has a low susceptibility to wear and assures a high degree of impermeability.
    Type: Application
    Filed: June 24, 2002
    Publication date: January 2, 2003
    Inventors: Andre Ullrich, Juergen Schlipf