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. 24, 1996
Filed:
May. 20, 1994
Applicant:
Inventor:
Martin Blumle, Horhausen, DE;
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B31B / ;
U.S. Cl.
CPC ...
493177 ; 493178 ; 493180 ; 493183 ;
Abstract
An article of manufacture, such as letter envelopes, paper bags, shipping uches, and the like is manufactured continuously on a production line that includes a back folding or so-called zig-zagging station which folds back one of the bottom flaps, first in a direction opposite to the continuing feed advance and then in the direction of the feed advance, whereby the formation of so-called bed bottoms or stand-up bottoms for these articles is facilitated. A cross strip (43) of a front or back portion of the article and respective precreases are used as a folding arm and fold lines in the formation of the zig-zag fold.