Filter for a propellant gas evacuation system
First Claim
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 such that exhaust fumes may pass therethrough and residue is filtered from the exhaust fumes wherein the upper filter chamber includes a removable lid such that the filter material is removable and such that exhaust fumes may pass from the upper filter chamber to an environment outside of the filter assembly after the exhaust fumes have been filtered by the filter material;
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 the 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 which indicates 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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Accused Products
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.
178 Citations
20 Claims
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1. A filter assembly for filtering exhaust fumes from a storage container, said assembly comprising:
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an upper filter chamber having an outer housing and containing filter material such that exhaust fumes may pass therethrough and residue is filtered from the exhaust fumes wherein the upper filter chamber includes a removable lid such that the filter material is removable and such that exhaust fumes may pass from the upper filter chamber to an environment outside of the filter assembly after the exhaust fumes have been filtered by the filter material; 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 the 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 which indicates when the filter assembly is saturated with residue; and a flashback inhibitor for preventing flashback of the exhaust fumes or residue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification