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:
Mar. 26, 2002
Filed:
Jul. 06, 1999
Konrad Böhm, Volkertshausen, DE;
Norbert Achten, Ohringen, DE;
Lechner GmbH, Rielasingen, DE;
Abstract
A method and device for producing a two chamber pressure pack comprised of an outer container ( ) and an inner sack ( ) which are glued in an edge area. After inserting the inner sack into the outer container, the edge area of the inner sack is expanded by means of a tool, said tool being guided into said area, and is pressed against the inner surface of the edge area of the outer container. Afterwards, the edge areas which are connected to one another are mutually bordered by the outer container and inner sack. A valve cover is placed on the bordering edge in a sealed manner. In order to be able to uniformly expand the edge area of the inner sack, a compressible elastic body ( ) is used as a tool, said body being arranged approximately vertical in relation to the opening plane. When the inner sack is being inserted into the outer container, the outer periphery of said body is smaller than that of the inner wall of the inner sack edge area. Subsequently, when compression is increased, the outer surface of the edge area of the inner sack is placed on and presses against the inner surface of the outer container as a result of the fact that the outer periphery of the elastic body continually increases in a radial uniform manner in such a way that the outer surface is fully pressed against the inner wall of the edge area of the inner sack, and the peripheral surface formed by the inner wall regularly increases.