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:
Sep. 02, 2003
Filed:
Jul. 14, 2000
Evelyn Zwick, Ebmatingen, CH;
Alexander Wildhaber, Walenstadt, CH;
Rieter Automotive (International) AG, Zollikon, CH;
Abstract
The method and the device for manufacturing an acoustically effective foil stack ( ) made of embossed foil webs ( ) is characterised by the fact that at least two foil webs lying over one another ( ) are embossed at the same time, are conveyed along different length conveying routes (W, W , W , W ), and then are brought together into a stack ( ), and embossed foil webs ( ) arranged to be lying next to one another are laid down in an offset fashion due to the different length conveying routes (W, W , W , W ). A particularly advantageous-design of the embossing rollers ( ) provides foil webs which have knobs with a draped or folded type structure.