PACKAGE WITH PRESSURE ACTIVATED EXPANSION CHAMBER
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United States of America Patent
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Issued Date -
May 5, 2011
app pub date -
Sep 20, 2010
filing date -
Sep 18, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A package having an expansion chamber is depicted and described. The package generally includes a collapsed expansion chamber configured to open when a predetermined amount of internal pressure is reached. A pressure sensitive closure mechanism, such as a frangible seal or flexible we film web, is disposed between the main compartment and the expansion chamber and functions to separate the main compartment and the expansion chamber until the predetermined internal pressure is reached.
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