Receptacles – Receptacle side wall made of two or more layers of material... – Beverage receptacle
Patent
1980-04-08
1982-07-27
Hall, George T.
Receptacles
Receptacle side wall made of two or more layers of material...
Beverage receptacle
220 70, B65D 634, B65D 804, B65D 806
Patent
active
043413218
ABSTRACT:
A generally dome-shaped end closure for a receptacle, such as, the bottom end wall of a beverage container is roll-formed in a closely coordinated sequence of steps wherein the receptacle is fixed in position so that the external surface of the end wall to be formed is disposed in facing relation to a yieldable support, and rotatable bearing surfaces are simultaneously advanced into engagement with the end wall while being continuously rotated about a common axis whereby to form one or more annular ribs in the end wall while forcing the end wall to assume a generally convex or dome-shaped configuration as it is expanded outwardly against the yieldable support. A roll-forming apparatus for carrying out the method of the present invention permits a succession of end walls to be roll-formed on a revolving turret which carries a plurality of roller assemblies, each roller assembly defining the rotatable bearing surfaces which are rotated by a spindle drive, the spindle drive being axially advanced by a cam member as it is rotated to cause the associated roller assembly to advance axially through the interior of each receptacle for the roll-forming operation followed by retraction away from the receptacle whereupon the yieldable support is operative to release the can from its fixed position for unloading into a separate stacking area.
REFERENCES:
patent: 163747 (1875-05-01), Cummings
patent: 3279640 (1966-10-01), Dodson
patent: 3349956 (1967-10-01), Stephan
patent: 3572271 (1971-03-01), Fraze
patent: 3603275 (1971-09-01), Eickenhorst
patent: 3690507 (1972-09-01), Gaihus et al.
patent: 3704140 (1969-02-01), Petit et al.
patent: 4151927 (1979-05-01), Cracho et al.
patent: 4199073 (1980-04-01), Gombas
Hall George T.
Rost Kyle W.
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