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 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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Accused Products
Abstract
A filter assembly with upper and lower filter chambers containing 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. 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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Citations
18 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 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification