Patents by Inventor Eric Thevoz

Eric Thevoz 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 and method for cooling an extrusion cylinder
    Patent number: 5447190
    Abstract: A longitudinal stream of cooling air is caused to flow around the cylinder (10) and over the length of each of one or more heating-and-cooling zones. This longitudinal flow is facilitated by specially designed cooling fins (22; 25). The performance of the extruder is improved in that the temperature over the cross-section of the cylinder is more uniform. Moreover, wear and tear on the extrusion screw and on the cylinder are greatly reduced.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: September 5, 1995
    Assignee: Nokia-Maillefer SA
    Inventors: Jean-Paul Denisart, Eric Thevoz, Eric Affolter