The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 1982
Filed:
Jun. 10, 1980
Dietmar Anders, Hanover, DE;
Hermann Berstorff Maschinenbau GmbH, Hanover, DE;
Abstract
A two-stage extruder having a first, vertical stage and a second, separately driven, horizontal stage, the two stages being off-set from one another and lying at tangents to one another in the region of a connecting passage. The first stage has a rotatable plasticizing member with kneading blades off-set from one another and located between conveying screw components of said member and cylindrical pins projecting into the working chamber of said first stage. A bearing is provided for the member at its upper end and a cylindrical sleeve surrounds the lower end of the member and can be turned to control the effective size of the connecting passage or to eject material through a second outlet.