Closures for containers

Details Closures for containers Closures for containers

1988-08-31

1990-02-13

Norton, Donald F.

Bottles and jars

Closures

Frangible member or portion

B65D 4134

Patent

active

048998982

ABSTRACT:
A container closure molded from plastics material has a top, an annular skirt depending from the top and formed with a screw-threaded on its internal surface, and a tamper-evident ring connected to the bottom edge of the skirt by frangible bridges. The radially inner surface of the ring is formed with wedge-shaped inwardly projecting protrusions for engaging under a security band on the neck of a container. An annular groove is formed on the radially-outer surface of the ring at a location axially between the upper ends of the protrusions and the bridges, and serves to form a hinge in an advantageous method of molding the closure.

REFERENCES:
patent: 4196818 (1980-04-01), Brownbill
patent: 4526282 (1985-07-01), Dutt et al.
patent: 4549667 (1985-10-01), Dullabaun

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