Method of attaching tab to end panel

Details Method of attaching tab to end panel Method of attaching tab to end panel

1978-11-20

1980-05-13

Keenan, Michael J.

29522A, B21D 5144

Patent

active

042022878

ABSTRACT:
An easy open ecology end consisting of a removable section defined in an end panel and a tab for severing the removable section is disclosed herein. The removable section or disc is defined by a weakened score line and the tab has an opening edge aligned with at least a part of the inner edge of the score line with the opening edge having primary contact means for producing initial rupture of the score line. The tab is attached to the end using a unique method which will produce internal stresses in the metal of the tab so that the tab is constantly urged toward the surface of the end. The tab also has an opening therein aligned with the removable section and is designed to be locked into the opening created by severing the weakened line.

REFERENCES:
patent: 3543391 (1970-12-01), Henchert
patent: 3704805 (1972-12-01), Sheafe
patent: 3938693 (1976-02-01), Patel et al.
patent: 3938696 (1976-02-01), Herbst
patent: 3986633 (1976-10-01), Jordan

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