Screw cap made of plastics material
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United States of America Patent
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-
Mar 30, 1993
Grant Date -
N/A
app pub date -
Oct 30, 1990
filing date -
May 17, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A screw cap comprises an internal screw thread and a braking element for engaging the lead end of the external screw thread on a container for which the cap is intended. When the cap is applied to the container, the braking element progressively retards the screwing movement.
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