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:
Jul. 31, 1990
Filed:
Nov. 15, 1989
Hans Rausing, Wadhurst Park, GB;
Tetra Pak Holdings & Finance S.A., Pully, CH;
Abstract
A cardboard/plastics film laminate package (1) is provided with an opening arrangement consisting of a channel (6) fixed to the top wall of the package over an opening area (4) bounded by a tearing line (3) part thickness perforations and an opening element (9). The opening element (9) is a strip having a pull-tab (10) at one end and a bent back penetrating portion (11) fixed at (14) to a part (14') of the opening area. On pulling the tab (10), the penetrating portion (11) wedges between the channel (6) and the opening area of the package and is forced to penetrate the opening area. On further pulling, the opening area of the package is torn away and removed through the channel (1) which then forms a pouring mouth.