Patents by Inventor Juergen Bertram

Juergen Bertram 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).

  • Multiple extrusion head for the production of profiles, in particular for tire production
    Patent number: 6213748
    Abstract: The invention relates to a multiple extrusion head for the production of profiles, in particular for tire production, with a fixedly arranged head flange, into which extruders open, and with a closed head having flow ducts, an adapter and a profile strip, which closed head is arranged so as to be capable of being braced against the head flange and of being pivoted away. The invention is defined in that the closed head has a receptacle which is open in the direction of the head flange and in which at least one open flow duct insert is removably arranged.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: April 10, 2001
    Assignee: Hermann Berstorff Maschinenbau GmbH
    Inventor: Juergen Bertram