Tamper-evident closure with angled breakaway tabs

Details Tamper-evident closure with angled breakaway tabs Tamper-evident closure with angled breakaway tabs

1990-06-08

1991-07-23

Marcus, Stephen

Bottles and jars

Closures

Frangible member or portion

215258, B65D 4134

Patent

active

050336320

ABSTRACT:
A tamper-evident closure includes a cap having an interior, threaded peripheral skirt, a tamper-evident ring disposed below the lower edge of the skirt and a plurality of elongate bridge members interconnecting the tamper-evident ring to the cap. Each bridge member includes a lower end forming a lower juction with the ring an upper end thinner than the lower end forming an upper juction with a surface of a recess formed in the skirt. Each bridge member is designed to break at the upper end thereof when the closure is rotated in a direction to remove it from the container, and each bridge member is inclined upwardly at an acute angle to the ring from the lower to the upper junction, in the direction in which the cap is required to be rotated to remove it from the container. Each of the bridge members has a stepped configuration for providing a bridge surface closely spaced to and facing the surface of the recess at which the upper junction is formed for engaging this latter surface when the cap is being rotated to secure the closure to the container.

REFERENCES:
patent: 3455478 (1969-07-01), Fields et al.
patent: 4180174 (1979-12-01), Quinn
patent: 4471878 (1984-09-01), Davis et al.
patent: 4505401 (1985-03-01), Berglund
patent: 4573601 (1986-03-01), Berglund
patent: 4828127 (1989-05-01), Young et al.

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