Tamper-indicating plastic closure

Details Tamper-indicating plastic closure Tamper-indicating plastic closure

1991-04-09

1992-12-01

Marcus, Stephen

Bottles and jars

Closures

Frangible member or portion

B65D 4134

Patent

active

051673355

ABSTRACT:
A tamper-indicating plastic closure includes a plastic closure cap having a top wall portion, and a depending cylindrical skirt portion, and an annular pilfer band depending from the skirt portion. The pilfer band includes a plurality of circumferentially spaced flexible tabs, and an annular interference bead, with the arrangement configured to provide two modes of tamper-indicating interaction with an associated container. In order to facilitate high-speed application of the closure to a container, each of the flexible tabs includes a relatively thick central portion, operative during the second mode of tamper-indication, and an adjacent base portion of relatively reduced thickness for enhanced flexibility.

REFERENCES:
patent: Re33265 (1990-07-01), Gregory et al.
patent: 4402418 (1983-09-01), Ostrowsky
patent: 4470513 (1984-09-01), Ostrowsky
patent: 4550844 (1985-11-01), Lininger
patent: 4613052 (1986-09-01), Gregory et al.
patent: 4635808 (1987-01-01), Nolan
patent: 4709824 (1987-12-01), Thompson
patent: 4715506 (1987-12-01), McLaren
patent: 4759456 (1988-07-01), Kusz
patent: 4801030 (1989-01-01), Barriac
patent: 4938370 (1990-07-01), McBride
patent: 4978017 (1990-12-01), McBride

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