Title: End seam construction for composite containers

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1. An end seam connection for connecting the metal end and laminated body wall members of a cylindrical composite container, said metal end member including a central end wall portion, a tubular chuck wall portion connected at one end with and extending axially from the outer periphery of said end wall portion, an annular seaming panel portion connected at its inner periphery with the other end of said chuck wall portion, and a generally tubular inwardly-facing curl portion connected at one end with the outer periphery of said seaming panel portion and arranged in concentrically spaced relation about said chuck wall portion, said body wall member including a tubular layer formed of fibrous material, and a tubular metal inner liner layer bonded to the inner wall surface of said fibrous layer and projecting axially at at least one end a given distance beyond the outer periphery of said fibrous layer, said body wall member at said one end being deformed radially outwardly to define a funnel-shaped flange portion about the outer surface of which the projecting metal liner layer is deformed, said metal end member being seated in closed relation on said flange portion of said body wall member with the central end wall portion being contained within the body wall member, said seaming panel and curl portions being connected with said flange portion by a rolled, radially-inwardly compressed seam, the reversely deformed projecting liner portion being in metal-to-metal engagement with the surface of said curl portion that faces said seaming panel portion, and a layer of sealing compound compressed solely between said metal-lined flange portion and the chuck wall and seaming panel portions of said metal end member.

2. An end seam connection as recited in claim 1, wherein the length of said projecting metal liner portion is such that when said seaming panel and curl portions are connected with said flange portion by the rolled radially-inwardly compressed seam, the projecting metal liner portion extends also around said curl portion in metal-to-metal contact with that surface thereof that faces said chuck wall portion.

3. An end seam connection for connecting the metal end and laminated body wall members of a cylindrical composite container, said metal end member including a central end wall portion, a tubular chuck wall portion connected at one end with and extending axially from the outer periphery of said end wall portion, an annular seaming panel portion connected at its inner periphery with the other end of said chuck wall portion, and a generally tubular inwardly-facing curl portion connected at one end with the outer periphery of said seaming panel portion and arranged in concentrically spaced relation about said chuck wall portion, said body wall member including a tubular layer formed of fibrous material, and a tubular metal inner liner layer bonded to the inner wall surface of said fibrous layer and projecting axially at at least one end a given distance beyond said fibrous layer, said body wall member at said one end being deformed radially outwardly to define a funnel-shaped flange portion about the outer surface of which the projecting metal liner layer is deformed and compressed, said metal end member being seated in closed relation on said flange portion of said body wall member with the central end wall portion being contained within the body wall member, said seaming panel and curl portions being connected with said flange portion by a rolled, radially-inwardly compressed seam, the length of said projecting liner portion being such that the projecting metal liner portion extends around said curl portion in compressed metal-to-metal surface engagement with both those curl surfaces that face said chuck wall and said seaming panel portions, respectively.

Other info:

Inventors: Ellerbrock, Donald H. (Florissant, MO, US)
Bacon, John E. (St. Charles, MO, US)

Application Number: 553138
Filing Date: 1975-02-26
Publication_date: 1976-01-20
Assignee: Boise Cascade Corporation (Boise, ID)
Primary Class(es): 229/5.6 220/614, 220/619
Other Classes:
US Patent Ref:

2343550	Mar, 1944	Grove	229/5.
2986319	May, 1961	Bierman et al.	229/5.
3178087	Apr, 1965	Stump	229/5.
3221922	Dec, 1965	Smith	220/48.
3268145	Aug, 1966	Bauer	229/5.
3309004	Mar, 1967	Dry	229/5.
3353705	Nov, 1967	Kane	220/67.
3381594	May, 1968	Ellerbrock et al.	229/5.
3403813	Oct, 1968	Price	220/81.
3428239	Feb, 1969	Wannamaker et al.	229/5.
3882763	May, 1975	Ellerbrock	93/55.

Other Refs:
Primary Examiner: Moorhead, Davis T.
Assistant Examiner:
Attorney: Laubscher; Lawrence E.