Metal container end

Details Metal container end Metal container end

1979-10-11

1984-05-15

Shoap, Allan N.

Receptacles

Receptacle side wall made of two or more layers of material...

Beverage receptacle

220 66, B65D 808

Patent

active

044483228

ABSTRACT:
A container end formed from metal having an approximate thickness of 0.0120 inches which is capable of withstanding at least 90 psi buckle pressure and at least 60 psi rock pressure is disclosed herein. A container end panel includes a peripheral curl surrounding a substantially flat center panel with a countersink therebetween. The countersink has inner and outer substantially flat walls that are interconnected by an arcuate portion that has a radius of approximately 0.030 inches and the inner wall is connected to the periphery of the center panel through an arcuate portion that has a radius of approximately 0.025 inches. The outer flat wall has a length which is greater than the length of the inner flat wall and the outer flat wall defines an angle of less than five degrees with respect to a plane that extends perpendicular through the center flat panel. The inner flat wall has a length to locate the lower edge of the countersink about 0.075 inches or more below the lower edge of the periphery of the center panel and defines a minimum angle with respect to a vertical reference plane.

REFERENCES:
patent: 3441170 (1969-04-01), Khoury
patent: 3843014 (1974-10-01), Cospen et al.
patent: 4031837 (1977-06-01), Jordan

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