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:
May. 15, 1990
Filed:
Jul. 22, 1988
Maschinenfabrik Koppern GmbH & Co. KG, Hattingen, DE;
Abstract
A roller press for compacting fine-grained chemicals, especially salts, into sheets, having synchronously driven rollers with two axially spaced pressing surfaces on ring elements being provided with radial shoulders at both of their ends. Screw feeders for feeding the salt into the roll nip and wedge-shaped wall elements closing-off the roll nip in the axial direction on both ends of said ring elements and bearing against the shoulders, are also provided. Adjustment rods acting parallel to the roll axis are provided for the outer wall elements and vertical rods between the inner wall elements acting onto these wall elements via wedge-shaped surfaces arranged on said rods and the walls of said wall elements facing each other. The ring elements are integral with the roller bodies or separate cylindrical rings shrink-fit onto the roller bodies. Each ring element is associated with at least two screw feeders. The pressing surfaces of said ring elements are provided with ribs with interruptions in axial direction of the pressing surfaces. The ribs are each formed in a zig-zag shape including two spaced closed arrow tips leading in the direction of revolution.