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:
Nov. 09, 1999
Filed:
Nov. 05, 1997
Applicant:
Inventor:
Michael Meier-Kaiser, Alsbach-Hahnlein, DE;
Assignee:
Roehm GmbH Chemische Fabrik, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
B29B / ;
U.S. Cl.
CPC ...
366 763 ;
Abstract
An extrusion system includes a main extruder and a secondary injection extruder. Both extruders are connected via a three-way valve. The main extruder has a mixing section downstream of the junction point with the secondary injection extruder. An accelerated switch between molding masses with different colors can be made by switching the three way valve.