Tamperproof closure element

Details Tamperproof closure element Tamperproof closure element

1977-01-13

1978-02-28

Hart, R. E.

Bottles and jars

Closures

Frangible member or portion

B65D 4132

Patent

active

040761401

ABSTRACT:
A temperproof closure element integrally formed from molded synthetic material. The top cap section has a series of outwardly spaced projections which cooperate with mating inwardly spaced projections on a tear strip. A locking collar is provided with a similar series of inwardly spaced projections corresponding with mating outwardly directed projections on the same tear strip. The thickness of material along each of the set of mating projections is diminished providing a zone of reduced strength so that the tear strip can be removed prior to first use of the container containing the closure element.

REFERENCES:
patent: 3424330 (1969-01-01), Marcel
patent: 3817416 (1974-06-01), Costa
patent: 3837518 (1974-09-01), Gach
patent: 3871545 (1975-03-01), Bereziat
patent: 3901404 (1975-08-01), Feldman
patent: 3980195 (1976-09-01), Fillmore

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