Tamper-evident container

Details Tamper-evident container Tamper-evident container

1983-06-10

1984-10-02

Hall, George T.

Receptacles

Closures

Removable closure retained by ductile in situ deformation

220284, B65D 3900

Patent

active

044743050

ABSTRACT:
A tamper-evident container is supplied which has internal ribs adjacent the upper rim. The rim is provided with an external upwardly opening trough. A lid for the container has portions interfitting with the ribs to secure the lid in place. A portion of the lid overlies the upper rim of the container, and a depending skirt on the lid extends down into the trough about the upper end of the container whereby the skirt is initially hidden and protected against lifting thereof to remove the lid. The upper outer edge of the trough is provided with weakened areas including notches and, optionally indentations below the notches to facilitate tearing of the trough wall in the direction of plastic grain of the container. Such tearing of the wall permits lifting of the lid skirt to remove the lid, and provides a quick visual check that the container has been tampered with.

REFERENCES:
patent: 4006839 (1977-02-01), Thiel et al.
patent: 4385711 (1983-05-01), Bowen

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