Easy open end method and apparatus

Details Easy open end method and apparatus Easy open end method and apparatus

1975-04-07

1976-06-22

Larson, Lowell A.

113 1F, B21D 5144

Patent

active

039644146

ABSTRACT:
This invention relates to an easy open ecological closure member as well as processes and equipment for producing the same. The closure member is provided with readily depressible and hinged opening tabs or buttons, that do not readily separate from the closure member upon becoming depressed due to the novel structure and arrangement of the buttons, their base portions and their frangible tear line sections, all of which contribute to a selective concentration of stresses in the frangible tear line sections during opening.

REFERENCES:
patent: 3362569 (1968-01-01), Geiger
patent: 3550546 (1970-12-01), Eickenhorst
patent: 3794206 (1974-02-01), Deline et al.
patent: 3902626 (1975-09-01), Jordan et al.
patent: 3912114 (1975-10-01), Morran et al.

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