Filter for a propellant gas evacuation system
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United States of America Patent
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Nov 28, 2017
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N/A
app pub date -
May 8, 2016
filing date -
Apr 1, 2015
priority date (Note) -
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Abstract
A filter assembly with upper and lower filter chambers containing a filter material, preferably activated carbon, and a coalescing filter, respectively. The filter assembly includes a visual indicator for showing when the filter assembly is saturated and requires replacement or maintenance. In a preferred embodiment, the visual indicator is a temperature indicator. In an alternate embodiment, the visual indicator is an air flow indicator. A particularly preferred embodiment, the upper filter chamber includes a removable lid which allows for removal and replacement of the filter material. The filter assembly further includes at least one flashback inhibitor to prevent igniting fumes. The filter assembly connected to a storage drum which accepts residue from pressurized containers and removes contaminants from gas fumes which escape from the storage drum.
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