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:
May. 27, 2008
Filed:
Jan. 27, 2005
Larry T. Gunderson, Sun Prairie, WI (US);
Christopher E. Holm, Madison, WI (US);
Kelly R. Schmitz, Rockton, IL (US);
Zakir Ahmad Quabili, Hamtramck, MI (US);
C. Raymond Cheng, Madison, WI (US);
Larry T. Gunderson, Sun Prairie, WI (US);
Christopher E. Holm, Madison, WI (US);
Kelly R. Schmitz, Rockton, IL (US);
Zakir Ahmad Quabili, Hamtramck, MI (US);
C. Raymond Cheng, Madison, WI (US);
Fleetguard, Inc., Nashville, TN (US);
Abstract
An air filtration cartridge has annular filter media having a hollow interior and extending axially between first and second distally opposite end caps. The first end cap is an outlet end cap having flow straightening structure integrally formed therewith and spanning the hollow interior. The second end cap is a closed end cap having an interior face having quarter wave resonators formed by blind holes therein.