Patents by Inventor Hartwig Schluter

Hartwig Schluter 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).

  • Patent number: 4556376
    Abstract: An extruder head for producing flat cohesive profiled strips from resilient mixtures of differing composition, such as mixtures of rubber or synthetic material, and especially for manufacturing uncured tread strips for pneumatic tires having a two-ply central portion and two similar edge portions. The extruder head includes two extruders which are disposed at an acute angle next to or above one another, and feed a common extrusion nozzle via a preform die or member having flow channel which extend one above the other. The extruder head also has a third extruder which conveys the mixture for the edge portions and is connected to the preform die at a greater angle than are the aforementioned extruders.
    Type: Grant
    Filed: June 28, 1984
    Date of Patent: December 3, 1985
    Assignee: Continental Gummi-Werke Aktiengesellschaft
    Inventors: Willi Sievers, Hartwig Schluter, Gerhard de Vries