Adsorptive duct for contaminant removal, and methods

Gas separation: apparatus – Solid sorbent apparatus – Dispersed or impregnated solid sorbent bed

Reexamination Certificate

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C096S154000, C055S385300, C055SDIG007, C123S519000

Reexamination Certificate

active

06997977

ABSTRACT:
A duct for passage of air therethough; one particular use for the duct is as a passage for intake air for a vehicle engine. The duct has an interior, adsorptive region that is adapted to remove contaminants from the air stream passing therethrough. The adsorptive region includes adsorptive material such as carbon (usually activated carbon), activated alumina, zeolites, metal oxides or ion exchange resin. The duct inhibits diffusion of uncombusted gasoline back through the duct from the engine, after the engine has been shut off.

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