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:
Oct. 19, 2004
Filed:
May. 20, 2002
Siegfried Chszaniecki, Hannover, DE;
Berstorff, GmbH, Hanover, DE;
Abstract
At least one screw of a screw-type extruder drive-connected via a coupling to a gearing that is driven by a motor, the coupling being able to be coupled to and decoupled from the screw. A gearing carriage is provided which is configured such that the gearing can be drawn by a short distance on the gearing carriage in the direction of the longitudinal axis of the screw in order to decouple the coupling, and which gearing carriage can be swiveled or can move transverse to the longitudinal axis of the screw. The gearing with the coupling can be moved away from the screw to such an extent that the screw can then be withdrawn completely from the extruder counter to the feed direction of the screw, and a screw-changing device is provided by which the existing screw of the extruder can be received and can be replaced by another screw located in the screw-changing device.