Patents by Inventor Ralf Kewitz

Ralf Kewitz 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).

  • Pressing device for joining workpieces
    Patent number: 6202290
    Abstract: The invention concerns a pressing device (1) for joining workpieces, in particular press fittings to a pipe, having an electric drive (6) and a pressing tool (2) attached replaceably thereto, and is characterized in that control parameters for the drive (6) are stored on the pressing tool (2).
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: March 20, 2001
    Assignee: Novopress GmbH Pressen und Presswerkzeuge & Co. KG
    Inventors: Ralf Kewitz, Xuang Luong Nghiem