Tamper-proof closure and method of making same

Details Tamper-proof closure and method of making same Tamper-proof closure and method of making same

1977-09-14

1980-06-24

Ross, Herbert F.

Bottles and jars

Closures

Frangible member or portion

215218, 215341, 215348, B65D 4132

Patent

active

042091012

ABSTRACT:
A tamper-proof closure for a container including an endwall and an annular, threaded sidewall. The sidewall includes an internal projection for mating with a part of the container to prevent turning of the closure when the closure is mounted on said container. A tear tab is provided on the sidewall radially outwardly of the projection. The sidewall includes tear facilitating portions on circumferentially opposite sides of the tear tab to enhance tearing of the sidewall on opposite sides of the tear tab to permit the tear tab and the projection to be swung outwardly to a removed position in which the closure can be turned. Another aspect of the invention includes a method of making the closure.

REFERENCES:
patent: 1214675 (1917-02-01), Heath
patent: 3325035 (1967-06-01), Strickman
patent: 3399796 (1968-07-01), Steiner
patent: 3480170 (1969-11-01), Evans
patent: 3482725 (1969-12-01), Exton
patent: 3606063 (1971-09-01), Childs
patent: 3612323 (1971-10-01), Malich
patent: 3648874 (1972-03-01), Maller
patent: 3866845 (1975-02-01), Keeler
patent: 3881623 (1975-05-01), Landen
patent: 3899097 (1975-08-01), Aichinger

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