Plastic closure for containers
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United States of America Patent
Stats
-
Dec 18, 1984
Grant Date -
N/A
app pub date -
May 25, 1982
filing date -
Mar 15, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A plastic closure having pilfer-proofing characteristics for a container including a mouth-neck portion having formed on its peripheral surface an external thread and an annular flange located beneath it. The closure includes a top panel wall and a cylindrical skirt wall extending downwardly from the peripheral edge of the top panel wall. A breakable line extending circumferentially is formed on the skirt wall to divide the skirt wall into a main portion above the breakable line and a pilfer-proof bottom portion below it, and an internal thread adapted to be fitted with the external thread of the mouth-neck portion of the container is formed on the inner surface of the main portion of the skirt wall. The inner surface of the pilfer-proof bottom portion has formed therein at least one flap extending radially inwardly therefrom.
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