Patent · US Expired

Tear opening device for containers

US4267937A · kind A · utility

40Cited by

8References

8Claims

0Family size

Assignee

AB Akerlund & Rausing · SE

Inventors

Lars-Eric Piltz · Dalby, SE
Bo T. Quist · Bjärred, SE
Folke Kiellarson · Barsebäck, SE
Siwer Mansson · Lund, SE
Bengt Nilsson · Skoghall, SE

Key dates

Filing date	Apr 2, 1979
Grant date	May 19, 1981
Priority date	—
Expiry date	Apr 2, 1999

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65D2517/0088
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

An opening device is taught for packages comprising a substantially rigid outer wall portion and an inner layer of substantially gas-tight material (preferably a metallic foil), wherein the outer wall portion includes a first tearing notch defining an opening and a second tearing notch defining a grip tongue. The outer wall and the inner wall being interconnected substantially over their total surfaces facing each other with said outer wall portion and said inner layer being separated within an area substantially under said grip tongue. Preferably, the grip tongue is located completely within the opening defined by said first tearing notch.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.