Patent · US Expired

Screw cap for bottle-type containers

US4326639A · kind A · utility

29Cited by

3References

18Claims

0Family size

Assignees

GEORG MENSHEN GMBH & CO. KG · DE
Riedel-De Haen Aktiengesellschaft · DE

Inventors

Otto Stahl · Finnentrop, DE
Horst Schulz · Friedrichshafen, DE

Key dates

Filing date	Mar 13, 1980
Grant date	Apr 27, 1982
Priority date	—
Expiry date	Mar 13, 2000

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65D2401/40
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

A screw cap which can be screwed onto the thread of a bottleneck is provided with an outward-projecting collar joined to the cap via shearable links, said shearable links having different flexibility are arranged and formed in such a way that the shearable links of one group can be sheared off only after an angular torsion of the cap relative to the collar which is several times greater than that required for shearing the links of the other group.

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