Tamper indicating band for use in low rise cam-off application

Bottles and jars – Closures – Frangible member or portion

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215253, B65D 4134

Patent

active

045600767

ABSTRACT:
This relates to a closure having incorporated therein tamper indicating mechanism. The closure is provided with a tamper indicating member in the form of a sleeve which is divided into upper and lower bands which are separate from one another except for rupturable bridges. In lieu of relying solely upon the axial movement of the unrestrained part of the tamper indicating member to effect rupture of the bridges, the tamper indicating member has formed thereon lugs which cooperate with lugs on the neck finish and which lugs have camming surfaces to force the lower band axially away from the upper band as the closure unit is rotated in a removal operation. Separation of the bands may also be assisted by cooperating ramp surfaces between the two bands which become operative when the upper band is rotated and the lower band is held against rotation. This abstract is not to be construed as limiting the claims of the application.

REFERENCES:
patent: 2423582 (1947-07-01), Coleman
patent: 3314564 (1967-04-01), Andersen et al.
patent: 3455478 (1969-07-01), Fields et al.
patent: 3484012 (1969-12-01), White et al.
patent: 3866782 (1975-02-01), Westfall
patent: 4156490 (1979-05-01), Peraboni
patent: 4494664 (1985-01-01), Guala

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