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:
Apr. 08, 2003
Filed:
May. 24, 2001
Kurt M. A. Badeau, Evansville, WI (US);
Z. Gerald Liu, Madison, WI (US);
Thomas M. Yonushonis, Columbus, IN (US);
William C. Haberkamp, Cookville, TN (US);
Randolph G. Zoran, McFarland, WI (US);
Murray R. Schukar, Fitchburg, WI (US);
Fleetguard, Inc., Nashville, TN (US);
Abstract
An exhaust aftertreatment filter and method is provided for filtering engine exhaust. Varying cell size is provided to spread trapped contaminant particulate along a distribution pattern reducing heat concentration and the risk of melting during regeneration, to minimize hot-spot meltdown otherwise caused by high density concentration of trapped particulate during regeneration. Cell size is varied by varying volume and/or height and/or width and/or length. Tapering of cells is also provided to change the cross-sectional area from the upstream to the downstream end.