Receptacles – Closures – With closure opening arrangements for means
Patent
1974-12-12
1976-06-22
Hall, George T.
Receptacles
Closures
With closure opening arrangements for means
B65D 4132
Patent
active
039646335
ABSTRACT:
The present invention relates to a easy open end of the type that has a tab connection thereto by an integral rivet. The invention resides in an improved method for forming a weakened area or frangible connection between the permanent section of the panel and the removable section. The frangible connection in the panel is formed in such a manner that the removable section is relieved of any compressive forces that may have developed during the formation of the frangible connection. In addition, the removable section of the panel incorporates a further area of reduced cross-section that allows the tab and rivet to be pivoted relative to the removable panel section during initiation of rupture of the frangible connection and provides a vent for the inside of the container prior to the rupture of the fangible connection.
REFERENCES:
patent: 3601279 (1971-08-01), O'Neill
patent: 3698590 (1972-10-01), Cookson
patent: 3712503 (1975-07-01), Zundel
Anderson James E.
Hall George T.
National Can Corporation
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