Apparatus for joining sheet metal convenience-feature end closur

Details Apparatus for joining sheet metal convenience-feature end closur Apparatus for joining sheet metal convenience-feature end closur

1995-05-10

1997-11-18

Smith, Scott A.

Sheet metal container making

Apparatus to form container closure

Having means forming frangible zone on closure

413 17, B21D 5138

Patent

active

056880944

ABSTRACT:
Apparatus for use in chime seam joinder of a sheet metal convenience-feature end closure (133) to a sheet metal can body (153) having a non-cylindrical sidewall. Countersunk panel (112) with unitary chuck wall (100) interfit within an open end of the can body. A peripheral scoreline (102) in the countersunk panel, which contiguous to the chuck wall, defines the separable endwall panel. After that separation, substantially no obstruction to removal of solid-pack contents, as a single piece, remains. Seaming chuck tooling (172) provides continuous backing support peripherally along the inner surface of the chuck wall during chime seam joinder. Cutaway shaping (180) of seaming chuck portions 176, 177 eliminates registry concerns as to whether a single longitudinally-rigid integral opener (148), with its working edge (136) contiguous to the panel peripheral scoreline and the chuck wall, is located at either distal end of a centrally located axis (174) of the end closure.

REFERENCES:
patent: 3741142 (1973-06-01), Stuard
patent: 3820681 (1974-06-01), Hulse
patent: 4052949 (1977-10-01), Woodley
patent: 5038956 (1991-08-01), Saunders
patent: 5252019 (1993-10-01), Saunders et al.
patent: 5328313 (1994-07-01), Saunders
patent: 5462396 (1995-10-01), Saunders

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