Patents by Inventor Eduart Steppat

Eduart Steppat 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).

  • Piston with oval shaped lands
    Patent number: 5211101
    Abstract: A piston for an internal combustion engine with a separate head and skirt which are joined by the piston pin. At least one of the upper lands has a reduced diametrical clearance with the cylinder wall in an area perpendicular to the pin direction. The bottom land has a reduced diametrical clearance with the cylinder wall in the pin direction. The lands are oval shaped, the bottom land optionally a truncated oval. At least one of the upper lands can have the shape of two ovals offset by 90.degree. like a cloverleaf.
    Type: Grant
    Filed: June 20, 1991
    Date of Patent: May 18, 1993
    Assignee: Mahle GmbH
    Inventors: Thomas Letsch, Jorn Weipert, Eduart Steppat