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:
Mar. 31, 1992
Filed:
Oct. 31, 1990
Applicant:
Inventors:
Wayne M Wagner, Apple Valley, MN (US);
Eugene D Wilson, Prior Lake, MN (US);
Douglas E Flemming, Rosemount, MN (US);
Ed Steinbrueck, Eden Prairie, MN (US);
Assignee:
Donaldson Company, Inc., Minneapolis, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
F01N / ; F01N / ; B01D / ; B01D / ;
U.S. Cl.
CPC ...
219205 ; 55282 ; 55DI / ; 60303 ; 123549 ; 210184 ;
Abstract
A filter apparatus for reducing particulates from exhaust gases from a diesel engine having a housing containing a ceramic filter unit with an array of spirally mounted resistance rods electrically connected in parallel. A ceramic foam element is located behind the array, and is used to reflect heat back to the ceramic filter. A 12 or 24 volt battery is used as the power source.