Patents by Inventor Rainer Teschner

Rainer Teschner 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: 4944909
    Abstract: A method for manufacturing multilayer molded articles of at least two plastics material components having substantially different properties with respect to behavior, processing and/or temperature changes. The plastics material components are injected from different extruder unit through a common sprue brushing into a mold cavity of a molding tool. The plastics material components are introduced in a predetermined time sequence initially into different cross-sectional areas of a common sprue cone and are subsequently forced into the sprue cone in a converging manner toward a sprue duct of the sprue bushing.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: July 31, 1990
    Assignee: Battenfeld GmbH
    Inventors: Helmut Eckardt, Jurgen Ehritt, Alexander Bockenheimer, Rainer Teschner