Air filtration apparatus

Details Air filtration apparatus Air filtration apparatus

2009-05-21

2011-11-22

Hopkins, Robert A (Department: 1776)

Gas separation

Plural serial basically diverse separating media

Plural stages in unitary casing

C055S385300, C055S486000, C055S495000

Reexamination Certificate

active

08062397

ABSTRACT:
An air filter assembly for an evaporative emissions control canister used with an internal combustion engine fuel system. The assembly includes: a housing having: an air inlet formed in an upper portion of the housing; and an air outlet; and; a baffle disposed within the housing. The baffle extends vertically downward from the air inlet in the upper portion of the housing towards a bottom portion of the housing. The baffles forming a plurality of vertically extending channels interconnected through a horizontally interconnecting channel formed between a bottom edge of the baffle and the bottom portion of the housing. A first one of the vertically extending channel receives air entering the housing from the air inlet. The air passes downwardly in the first one of the channels, then passing laterally outwards through the horizontally interconnecting channel towards sidewalls of the housing, then passing upwardly through a second one of the vertically extending channels, and then finally exiting the housing through the air outlet. A filter structure is disposed in the second one of the vertically extending channels.

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