Closure cap

Details Closure cap Closure cap

1981-07-21

1983-07-12

Norton, Donald F.

Bottles and jars

Closures

Cap type

215333, 215353, B65D 4104

Patent

active

043925804

ABSTRACT:
A metal closure cap is described for sealing containers. It is of the lug type having a metal shell with a flowed-in gasket. The cap differs from prior twist caps of this general type by having a tapered corner between the cap top and the cap skirt. This corner design permits a reduced amount of metal to be used and further provides a more rigid closure corner permitting the use of lighter-weight metal. Improved methods of forming the cap shell, including the corner portion are also described.

REFERENCES:
patent: 1667003 (1928-04-01), Hardiman
patent: 3323672 (1967-06-01), Acton
patent: 3469727 (1969-09-01), Acton
patent: 3516565 (1970-06-01), Hatkevich

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