Plastic closure for containers

Details Plastic closure for containers Plastic closure for containers

1982-05-25

1984-12-18

Norton, Donald F.

Bottles and jars

Closures

Frangible member or portion

215350, B65D 4134

Patent

active

044886551

ABSTRACT:
A plastic closure having pilfer-proofing characteristics for a container including a mouth-neck portion having formed on its peripheral surface an external thread and an annular flange located beneath it. The closure includes a top panel wall and a cylindrical skirt wall extending downwardly from the peripheral edge of the top panel wall. A breakable line extending circumferentially is formed on the skirt wall to divide the skirt wall into a main portion above the breakable line and a pilfer-proof bottom portion below it, and an internal thread adapted to be fitted with the external thread of the mouth-neck portion of the container is formed on the inner surface of the main portion of the skirt wall. The inner surface of the pilfer-proof bottom portion has formed therein at least one flap extending radially inwardly therefrom.

REFERENCES:
patent: 1910913 (1933-05-01), Conner
patent: 2068389 (1937-01-01), Smith
patent: 3189209 (1965-06-01), Owens
patent: 3944103 (1976-03-01), Cros
patent: 4153174 (1979-05-01), Keeler
patent: 4196818 (1980-04-01), Brownbill
patent: 4331249 (1982-05-01), Banich
patent: 4418828 (1983-12-01), Wilde et al.

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