Patents by Inventor Joachim Wille

Joachim Wille 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).

  • Coolable trunk piston for internal combustion engines
    Patent number: 5052280
    Abstract: In a two-piece piston with a head piece and a trunk hinged only over the piston pin, the annular space radially located inside the piston ring groove and open in the direction of the trunk is covered with a sheet metal wall part forming a cooling duct. The sheet metal wall part is held by a collar that extends from the outer annular wall of the head piece and is cramped around the sheet metal wall part. For optimally covering the annular space, the sheet metal wall part is radially divided into two parts.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: October 1, 1991
    Assignee: Mahle GmbH
    Inventors: Eberhard Kopf, Joachim Wille