Easy open end

Details Easy open end Easy open end

1976-02-10

1977-07-19

Keenan, Michael J.

113121C, B21D 5144

Patent

active

040361594

ABSTRACT:
This invention relates to an improved easy open ecological closure member for containers as well as processes and equipment for producing the same. The container closure member is provided with one or more 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: 3794206 (1974-02-01), DeLine
patent: 3912114 (1975-10-01), Morran
patent: 3946683 (1976-03-01), Jordan
patent: 3964414 (1976-06-01), Gane

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