Receptacles – End wall structure – Joint or seam between sidewall and end wall
Patent
1996-05-08
1998-08-04
Shoap, Allan N.
Receptacles
End wall structure
Joint or seam between sidewall and end wall
2203661, 220612, 220619, 220623, B65D 812, B65D 820, B65D 5116
Patent
active
057881120
ABSTRACT:
A container and end adapted for closing and sealing the container with a double-seaming operation is provided which permits evacuating and back-flushing of gases out of and into the container while the end is in a seated and unseamed position on the container during the closing operation. The end includes a central circular panel, a chuck wall surrounding an outer periphery of the central panel and extending radially outwardly and upwardly from the central panel and a crown seaming panel surrounding the chuck wall and extending radially outwardly from the chuck wall and having an outer curled end for being double-seamed with a flanged upper end portion of the container for closing of the container. The end preferably includes sealing compound positioned on an inside surface of the chuck wall and the crown seaming panel. Separate projections are formed in the chuck wall and in the crown seaming panel of the end and extend inwardly and radially of the chuck wall and crown seaming panel, respectively, and are spaced around the chuck wall and the crown seaming panel for engaging the flanged upper end of the container being closed for forming gas channels between the respective projections and between the flanged upper end of the container and the chuck wall and the crown seaming panel of the end when such end is in a seated and unseamed position on the container during closing and prior to completion of the double-seaming operation.
REFERENCES:
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patent: 4163504 (1979-08-01), Elser
patent: 4717575 (1988-01-01), Larroche
Bacon John Ellis
Westphal Teddy M.
Kopsidas Niki M.
Shoap Allan N.
Sonoco Products & Company
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