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:
Mar. 07, 2023
Filed:
Jun. 26, 2018
Aim3d Gmbh, Rostock, DE;
Tom Rückborn, Rostock, DE;
René Zielke, Rostock, DE;
Clemens Lieberwirth, Rostock, DE;
Vincent Morrison, Rostock, DE;
Hermann Seitz, Rostock, DE;
Abstract
Method and device for the extrusion of thermomechanically deformable materials, as well as a compact screw extruder. The configuration of the material infeed in a screw extruder, has a significantly smaller length-diameter ratio than known solutions from the fields of injection moulding and additive manufacturing and a crushing tool, located in the funnel-shaped infeed region of the vertically arranged screw extruder which prevents the rotational movement of the material in the funnel, and also thereby forces movement in the conveying direction of the screw extruder in combination with the gradient of the screw flanks. In addition, a portion of the coarse material is crushed, whereby the bulk material density is increased in the region of the screw and less air must be pressed out of the material in the region of the plasticization and homogenization zone.