Patents by Inventor Sven Schultheis

Sven Schultheis 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).

  • Apparatus for feeding synthetic resin material to injection molding and extruder units
    Patent number: 5259749
    Abstract: A highly viscous or dough-like material, especially glass fiber-filled polyester, polyamide or polypropylene is fed from a rotating funnel via a feed worm lying along a generatrix of the funnel directly into an extruder or an injection molding cylinder and without passing through an elbow or other jacket. The system is thereby able to operate at reduced pressure with least damage to the fibers and reduced drive energy for the feed worm or screw.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: November 9, 1993
    Assignee: Krauss Maffei AG
    Inventors: Franz Meixner, Peter Brams, Sven Schultheis