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:
Dec. 28, 1982
Filed:
Jan. 27, 1981
Applicant:
Inventor:
Dietmar Anders, Hanover, DE;
Assignee:
Hermann Berstorff Maschinenbau GmbH, Hannover Kleefeld, DE;
Primary Examiner:
Int. Cl.
CPC ...
B29F / ;
U.S. Cl.
CPC ...
425144 ; 264 68 ; 264236 ; 264347 ; 366 79 ; 366 82 ; 425191 ; 425206 ; 4253 / ; 4253 / ; 425461 ; 425467 ;
Abstract
Apparatus located at the output end of a screw extruder comprising a mandrel to rotate with said screw and a jacket coaxial with the mandrel and rotatable in an opposite direction of rotation to the mandrel at a speed which is steplessly adjustable. Sealing lips co-operating with abrasion rings are preferably provided on relatively moving surfaces of the jacket and stationary housings and temperature adjustment means can be provided in the jacket and the mandrel.