Patents by Inventor Hans-Gerd Kroschel

Hans-Gerd Kroschel 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 apparatus for making piston rings
    Patent number: 4856105
    Abstract: A method of making self-tensioning rings, including the steps of circumferentially machining an out-of-round ring blank on inner and outer surfaces thereof and subsequently cutting a ring segment out of the ring for obtaining a ring gap therein; measuring a circumferential contour of the ring subsequent to the machining step; and calculating the circumferential length of the ring segment and a cutting angle for removing the ring segment from the ring as a function of data obtained in the measuring step.
    Type: Grant
    Filed: September 23, 1987
    Date of Patent: August 8, 1989
    Assignee: Goetze AG
    Inventors: Manfred Brocksieper, Rolf Luckger, Hans-Gerd Kroschel, Jochen Stechow