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:
Dec. 04, 1990
Filed:
Nov. 14, 1989
Applicant:
Inventors:
Arthur Kaser, Steinhaus, AT;
Ulf Pfeifer, Wien, AT;
Assignee:
Voest-Alpine Automotive Gesellschaft m.b.H., Linz, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55267 ; 55242 ; 55523 ; 55DI / ; 60303 ; 60311 ;
Abstract
The particle filter for waste gases includes a porous filter body traversed by honeycomb-form channels and resistance heating elements for burning-off of soot particles. The resistance heating elements are in a zone adjacent an entry end of the filter body and include perforated strips of sheet metal including longitudinal strips which are bent into U-shaped heat conductors. Cross strips create, on destruction of individual heat conductors, an electrical current detour path. The resistance heating elements are inexpensive to produce and easy to install.