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Filter for a propellant gas evacuation system

  • US 9,993,764 B2
  • Filed: 04/01/2015
  • Issued: 06/12/2018
  • Est. Priority Date: 04/01/2014
  • Status: Active Grant
First Claim
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1. A filter assembly for filtering exhaust fumes from a storage container, said assembly comprising:

  • an upper filter chamber having an outer housing and containing filter material configured to permit exhaust fumes to pass therethrough and to filter residue from the exhaust fumes;

    a lower filter chamber having an outer housing and containing a coalescing filter for filtering residue from the exhaust fumes, wherein an upper end of the lower filter chamber is attached to a lower end of the upper filter chamber and a lower end of the lower filter chamber is adapted to attach to a venting hole on the storage container;

    a visual indicator attached to the filter assembly, the visual indicator being adapted to provide an indication when the filter assembly is saturated with residue; and

    a flashback inhibitor for preventing flashback of the exhaust fumes or residue.

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