Embossed can end construction

Details Embossed can end construction Embossed can end construction

1975-04-21

1976-03-02

Hall, George T.

Receptacles

Closures

With closure opening arrangements for means

220 906, B65D 4132

Patent

active

039412776

ABSTRACT:
An embossed can end construction for full opening, easy opening metal cans used for food products that are heat-processed in the closed cans. The can end has an embossed formation in the removable panel of the can end defined by an endless generally annular score line, either with or without a protective fold at the peripheral edge of the removed panel. A ring pull tab is riveted to the removable panel portion having a nose with an offset tip which engages the can end adjacent the score line to initiate rupture of the can end at the score line when the ring of the tab is raised and the nose tip moves down. The embossed formation has a general modified heart-shape in contour with a depressed groove defining the heart-shape. The embossed formation imparts great stiffness to the can end metal. The stiffness maintains a planar shape for the can end which resists doming or bulging when the end is subjected to pressure inside the can different than atmospheric pressure. The planar stiffness imparted by the embossed formation assists in directing the initial rupturing force of the cooperating pull ring nose tip substantially vertically, that is parallel with the axis of the can and the axis of the riveted connection between the pull ring and can end. The stiffness also prevents curling of the removable panel as the panel is completely pulled away from the can by the final lifting of the pull ring from the can.

REFERENCES:
patent: 3752353 (1973-08-01), Slade
patent: 3762596 (1973-10-01), Henning et al.
patent: 3891117 (1975-06-01), Dragomiter et al.

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