Tamper proof closure

Details Tamper proof closure Tamper proof closure

1985-12-12

1987-01-27

Norton, Donald F.

Bottles and jars

Closures

Frangible member or portion

B65D 4134

Patent

active

046389172

ABSTRACT:
The invention concerns a tamper proof closure for a threaded mouth. The closure comprises a plastic cap provided by means of tear-off elements with a ring. If when the mouth is sealed the ring is still on the cap, then it displays the fact it was not opened yet. The ring is secured against a screwing-off motion by lock elements at the mouth. The ring is provided with at least one aperture entered by a catch on the cap. When the cap is rotated off, the catch destroys the ring. This can be facilitated by providing predetermined rupture sites in the shape of narrow connection strips between certain ring parts.

REFERENCES:
patent: 4530436 (1985-07-01), Wiedmer
patent: 4534479 (1985-08-01), Conti
patent: 4541536 (1985-09-01), Davis et al.

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