Patents by Inventor Franz Ell

Franz Ell 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).

  • Device for charging injection molding and extruding machines and having a funnel provided with pins passing through clearances in a feed worm
    Patent number: 5577839
    Abstract: The problem of insufficient friction along the wall of a rotating funnel feeding viscous material to an extruder or injection molding machine so that the material sweeps past the conveying screw and prevents the conveying screw from continuously feeding that mass to the outlet of the funnel, is solved by providing pins which project inwardly from the rotating funnel wall and engage in interruptions in the flight of the conveying screw. The funnel wall can also be provided with pockets or grooves.
    Type: Grant
    Filed: June 14, 1995
    Date of Patent: November 26, 1996
    Assignee: Krauss Maffei Aktiengesellschaft
    Inventors: Peter Brams, Franz Ell, Werner Mandl