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:
Feb. 12, 2008
Filed:
Aug. 28, 2003
Applicant:
Friedrich Mueller, Kressbronn, DE;
Inventor:
Friedrich Mueller, Kressbronn, DE;
Assignee:
Lindauer DORNIER Gesellschaft mbH, Lindau, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29B 7/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
A plasticating screw for an extruder or an extrusion press has a thread change, whereby the volume of the transporting cross-section does not change and thus a pressure increase in the region of the thread is avoided. To this end, in the region wherein a first and a second screw thread of the plasticating screw overlap, the thread width outside the overlapping region is equal to d and the thread width inside the overlapping region is equal to ½ d.