Tab system

Details Tab system Tab system

1977-12-29

1978-12-19

Gilden, Leon

Receptacles

Compartmented container

Compartment partition is movable or removable

113116Y, 113121C, 220269, B21D 5144

Patent

active

041300742

ABSTRACT:
A method of manufacturing a tab (43) of the type attachable to an easy-open container wall to open of a tear panel of the container wall, including an initial step of placing a protruding stitch (45) in a sheet metal strip (47) from which the tab is to be formed. Thereafter, a tab blank (51) is cut in the strip of sheet metal, with this cut starting and ending immediately adjacent to opposite sides of the stitch, but the cutting die is separated slightly from the stitch. Thereafter, the outer periphery (61) of the tab blank is curled onto the inner surface of the tab blank. The stitch is then severed adjacent the tab.

REFERENCES:
patent: 3720349 (1973-03-01), Brown et al.
patent: 3850124 (1974-11-01), Brown
patent: 3870001 (1975-03-01), Brown
patent: 3877606 (1975-04-01), Silver
patent: 3929252 (1975-12-01), LaCroce
patent: 3967752 (1976-07-01), Cudzik
patent: 3977561 (1976-08-01), Strobe et al.
patent: 3996867 (1976-12-01), Tanuichi
patent: 4044915 (1977-08-01), LaCroce et al.

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