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. 13, 1994
Filed:
Mar. 23, 1993
Applicant:
Inventors:
Clifton Zimmermann, Karlsruhe, DE;
Heribert Kuerten, Neustadt, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H / ;
U.S. Cl.
CPC ...
242521 ; 83 16 ; 225 935 ; 242526 ;
Abstract
A moving web (1) is severed, after the intended length has been wound up, by fracture mechanical crack propagation starting from perforation cuts introduced by means of a laser system (9-11) into a web material embrittled by cooling (8) at the severance location.