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:
Apr. 13, 1993
Filed:
Sep. 26, 1991
Alfons Schmidt, Horhausen, DE;
Abstract
Self-sealing envelopes having an envelope front with two side flaps and a osure flap, and a bottom flap with an edge strip along the free edge of the bottom flap, are produced by cutting blanks to size, and producing precreases along lines where folds will be made to fold all flaps. A self-sealing adhesive is applied to the inner surface on the closure flap and on the outer surface of the bottom flap edge strip. All precreases are formed on the same side of the blank, whereby the edge strip must be folded in a direction opposite to its precrease. This feature facilitates the movement of the blank through the envelope production machine into which the blank moves with the edge strip leading in the feed advance direction, and all creasing tools operate in the same creasing direction, whereby all precreasing tools can be located on the same side of the blank.