Tamperproof container closure

Details Tamperproof container closure Tamperproof container closure

1983-02-04

1984-09-04

Norton, Donald F.

Bottles and jars

Closures

Frangible member or portion

B65D 4134

Patent

active

044692340

ABSTRACT:
A closure for bottles or other containers with a threaded neck comprises an internally threaded plastic cap adapted to be screwed onto that neck with the aid of a socket wrench, the rim of the cap being connected via several frangible webs with a telltale ring of like material carrying a set of peripherally spaced-apart lugs with inbent extremities elastically hooked onto a peripherally projecting flanges of the container neck to prevent an unscrewing of the cap without detachment of the telltale ring therefrom. The ring, which has notches engageable by the socket wrench for positive entrainment, is integral with a skirt spacedly surrounding the lugs and projecting beyond them to forestall any attempt at disengaging their extremities from the flange before unscrewing the cap. The flange, overhanging an annular shoulder of the container body on which the skirt comes to rest in the assembled position, has detents in the form of two diametrically opposite ramps which terminate in radial edges coacting with adjacent lugs of the ring to limit any relative backward rotation thereof.

REFERENCES:
patent: 3650428 (1972-03-01), Miller
patent: 3737064 (1973-06-01), Patel et al.
patent: 4147268 (1979-04-01), Patel et al.

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