Plastic closure with structural thread formation
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United States of America Patent
Stats
-
Jun 23, 1987
Grant Date -
N/A
app pub date -
Mar 20, 1986
filing date -
Mar 20, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A plastic closure for use on a container having an externally threaded neck is disclosed wherein the skirt portion of the closure cap includes an internal structural thread formation. The structural thread formation comprises a helical thread ramp portion which is configured for load-bearing engagement with the thread of the associated container, and further includes means for reinforcing the thread ramp portion, in the form of a plurality of spaced-apart reinforcing gussets. The provision of the structural thread formation desirably facilitates high-speed molding of the closure, and desirably acts to reduce the quantity of plastic material required for molding the closure.
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