Valve for vented package
OwnerWilliam S. Schneiderinventor
Life of this patent
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Abstract
This disclosure relates to a vent valve arrangement for a sealed package wherein when excessive pressures occur within the sealed package, gases will automatically be vented therefrom. The vent valve includes at least one perforation in the package with the perforation being formed through one of two walls of the package into the interior thereof and there being a resistance path from the interior of the package to the perforation with the resistance path being openable by forces expanding the walls whereby pressure that is caused by the formation of gases and vapors within the package will open the resistance path and escape through the perforation.
Claims10
A vented package comprising two walls of flexible material joined together to define a sealed enclosure, said walls having an area wherein at least a portion of said walls are joined together in an inside face-to-inside face seal, said face seal including a sealed enclosure defining portion and an extension projecting into said sealed enclosure, and valve means for venting excess gas pressure from within said sealed enclosure, said valve means including a perforation through at least one of said walls in said seal area, and a resistance path to said perforation from within said sealed enclosure through said seal extension, said resistance path being of the type openable in response to gaseous pressure within said sealed enclosure for venting gases through said perforation, said resistance path being normally closed by a portion of said seal extension.
Dependencies are inferred from the claim text.