Method of forming and a construction for a digitally openable co

Details Method of forming and a construction for a digitally openable co Method of forming and a construction for a digitally openable co

1974-11-07

1976-02-17

Keenan, Michael J.

113 1F, 113 15A, B21D 5126

Patent

active

039384551

ABSTRACT:
An improved method of forming and a construction for a digitally openable container closure. Included therein is a container wall having an inwardly displaceable opening panel defined by a fracturable web which has been formed by selectively displacing metal adjacent a predetermined line substantially perpendicular to the surface of the container wall and by extruding metal between substantially parallel die surfaces which are disposed at an angle to the plane of the container wall. Formed concurrently therewith is an integral inclined deflectable portion projecting outwardly from the container wall adjacent the fracturable web and which deflectable portion is adapted to effect, in response to digitally applied inwardly directed pressure, a relative displacement between the rim of the panel and the lip of the adjacent container wall to selectively strain the web and initiate fracture thereof to permit inward displacement of an opening panel of greater extent than the size of the opening formed in the container wall by the separation of said panel.

REFERENCES:
patent: 2119533 (1938-06-01), Fink
patent: 2159325 (1939-05-01), Fabrice
patent: 2187433 (1940-01-01), Punte
patent: 2434375 (1948-01-01), Van Saun
patent: 3227304 (1966-01-01), Asbury
patent: 3362569 (1968-01-01), Geiger
patent: 3410436 (1968-11-01), Foss et al.
patent: 3411470 (1968-11-01), Fraze
patent: 3688718 (1972-09-01), Schrecker
patent: 3693827 (1972-09-01), Baumeyer et al.
patent: 3698590 (1972-10-01), Cookson

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