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. 07, 1997
Filed:
Nov. 07, 1995
Applicant:
Inventors:
Klemens Sensen, Lengerich, DE;
Hans-Udo Beckmann, Lengerich, DE;
Jurgen Linkies, Lienen, DE;
Egon Kotter, Ladbergen, DE;
Ulrich Krause, Lienen, DE;
Assignee:
Windmoller & Holscher, Lengerich/Westf., DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
425 721 ; 2642093 ; 264564 ; 4253261 ; 425377 ; 4253871 ; 425392 ; 4254031 ;
Abstract
A withdrawal device for a plastic tubular film is manufactured in a blowing method by an extruder. To prevent the formation of center wrinkles in the withdrawal of plastic tubular film, at least one deflection cylinder and/or angle bar has a differing diameter across its length.