Tamper evident closure

Details Tamper evident closure Tamper evident closure

1983-12-07

1985-01-15

Hall, George T.

Receptacles

Closures

With closure opening arrangements for means

220276, 220306, 220309, B65D 1734

Patent

active

044934327

ABSTRACT:
A closure for a food container which is constructed to visually indicate whether or not the container has been opened without authorization. The closure has a discoidal lid body and a peripheral skirt. A detachable lock ring is connected with the skirt along a weakened fold line which provides a hinge about which the lock ring is folded inwardly inside of the skirt. The rim of the container is rolled outwardly and has a free edge which interlocks with the lock ring to secure the lid on the container. The lid can be removed only after the lock ring has been removed by tearing it away from the skirt along the weakened fold line. Absence of or damage to the lock ring indicates unauthorized opening of the container or other tampering, while the presence of the lock ring confirms that the container has not been opened.

REFERENCES:
patent: 4146148 (1979-03-01), Dwinell et al.
patent: 4190175 (1980-02-01), Allen

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