Patents by Inventor R?uuml;diger Ostholt

R?uuml;diger Ostholt 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).

  • Linear drive device for opening and closing molding tools and for applying a closing force thereon
    Publication number: 20040091570
    Abstract: The invention relates to a linear drive device for opening and closing molding tools and for applying a clamping force thereon, especially mold halves of a plastics molding machine. The device is comprised of a screw drive acting upon the molding tool, a first screw nut for opening and closing the molding tools and a piston/cylinder unit for applying a clamping force. In order to provide a linear drive device for opening and closing molding tools, especially mold halves of a plastics molding machine, which enables fast opening and closing of the molding tools and energy-optimized application of the clamping force to the molding tools, the piston/cylinder unit (113) acts upon the molding tool by means of a second screw nut (108).
    Type: Application
    Filed: July 29, 2003
    Publication date: May 13, 2004
    Inventors: Walter Wohlrab, R?uuml;diger Ostholt, Ralf Ingo Meyer, Klaus Becker