Title: Double seamed container and method

Abstract: A method of hermetically pressure-resistantly double seaming a metal end closure to a metallic container body whose wall is highly-worked, has a substantially axial grain direction and is less than about 0.057 inch thick at its marginal end portion, which includes forming a body curl of the marginal end portion and double seaming the end closure thereto, and, the resulting double seamed metallic container whose double seam includes six substantially axial metallic layers, two of which are a radially compressed body curl.

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Inventors: Zofko, David Edward (Greenwich, CT, US)

Application Number: 687496
Filing Date: 1976-05-18
Publication_date: 1977-07-26
Assignee: American Can Company (Greenwich, CT)
Primary Class(es): 413/6 220/614, 220/619, 413/7
Other Classes:
US Patent Ref:

2250002	Jul, 1941	Bogner	113/19.
3402591	Sep, 1968	Maeder	113/120.
3603275	Sep, 1971	Eickenhorst	113/120.
3774560	Nov, 1973	Hartz	113/120.
3952677	Apr, 1976	Hartman et al.	113/120.

Other Refs: 100,684404,532

Jan, 1941	SW
Dec, 1965	CH

Primary Examiner: Keenan, Michael J.
Assistant Examiner:
Attorney: Auber; Robert P., Audet; Paul R., Ziehmer; George P.