Pressure relief device
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United States of America Patent
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Apr 23, 2013
Grant Date -
Apr 28, 2011
app pub date -
Oct 26, 2009
filing date -
Oct 26, 2009
priority date (Note) -
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Abstract
A pressure relief device includes a main body and at least two air control units. The main body has at least one passage therein and two outlets formed at upper and lower ends of the passage. A lid is pivotally connected to each of the outlets. The two air control units are each disposed in the passage close to the lid. An air control device drives the air control units to open/close the lid which is adapted to open/close the passage.
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