Plastic cap featuring excellent sealing and venting
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United States of America Patent
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Aug 18, 2009
Grant Date -
Jun 29, 2006
app pub date -
Dec 15, 2005
filing date -
Dec 16, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A plastic cap comprising a top panel and a skirt hanging down from the peripheral edge of the top panel, the inner surface of the top panel forming an inner ring that forms a seal upon coming into intimate contact with the inner surface of the wall of the mouth of a container, and the inner surface of skirt forming a screw thread that comes into engagement with a screw thread formed on the outer surface of the wall of the mouth of the container, wherein a slender recessed portion is formed in a number of at least one in the inner surface of said inner ring extending upward from an end thereof. The cap features both excellent sealing and excellent venting.
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