Metal end having fluted end curl

Details Metal end having fluted end curl Metal end having fluted end curl

1977-12-08

1979-08-07

Shoap, Allan N.

Receptacles

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

Beverage receptacle

113121R, 220 67, 229 56, B65D 742, B65D 310

Patent

active

041635043

ABSTRACT:
A loose metal end for forming a seamed can end closure and which includes an annular marginal seaming panel having a radiused outer rim concluding in a curled end underlying the seaming panel and provided with a peripherally interspaced array of radially extending flutes shaped to crest directionally towards the seaming panel. When double-seamed onto a can body, the fluted curled end is folded into a fluted hook end with the flutes cresting radially outward and away from the can body. As thus disposed, the flutes provide preselectively located sites which function to direct such "pinwrinkles" or "pinlips", as may result from buckling compressive forces generated in the hook end during the seaming or crimping operations, to project radially outward and away from the can body.

REFERENCES:
patent: 700578 (1902-05-01), Thompson
patent: 2327454 (1943-08-01), Punte
patent: 2343550 (1944-03-01), Grove
patent: 2497870 (1950-02-01), Dennis
patent: 3083663 (1963-04-01), Stuchbery et al.
patent: 3122116 (1964-02-01), Hogmann et al.
patent: 3376997 (1968-04-01), Kutka
patent: 3580464 (1971-05-01), Griffith

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