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:
Jun. 25, 1996
Filed:
Mar. 16, 1995
Applicant:
Inventor:
Wilhelm Kahlen, Troisdorf, DE;
Assignee:
Reifenhauser GmbH & Co. Maschinenfabrik, Troisdorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
425 721 ; 425325 ; 425392 ;
Abstract
In a foil blowing apparatus, the distribution of singularity in the flattened foil tube over the length of a roll in which the tube is coiled are distributed by a fold shifting device above the squeezing rollers at the top of the foil blowing unit. The fold shifting device has three sets of pivotal planes each formed by a deflecting roller and a turning bar and oriented so that the maximum angle between each approaching stretch of the flattened tube and a perpendicular to the turning bar is 30.degree. and the maximum angle of each departing stretch and the perpendicular to the turning bar is 30.degree..