The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 14, 2006
Filed:
May. 04, 2004
Andrew James Dallas, Apple Valley, MN (US);
Steven Alan Carter, Eagan, MN (US);
Jordan Spencer Flagstad, East Bethel, MN (US);
Lefei Ding, Falcon Heights, MN (US);
Jon Dennis Joriman, Little Canada, MN (US);
Andrew James Dallas, Apple Valley, MN (US);
Steven Alan Carter, Eagan, MN (US);
Jordan Spencer Flagstad, East Bethel, MN (US);
Lefei Ding, Falcon Heights, MN (US);
Jon Dennis Joriman, Little Canada, MN (US);
Donaldson Company, Inc., Minneapolis, MN (US);
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.