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. 03, 1988
Filed:
Apr. 24, 1987
Applicant:
Inventors:
Kauko Kanniainen, Vihtavuori, FI;
Veikko Loukeinen, Vihtavuori, FI;
Assignee:
Kemira Oy, Helsinki, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
2915 / ; 422180 ;
Abstract
The invention relates to a method for making and reinforcing a catalytic unit intended for purifying exhaust gases, in which method a helical catalytic unit is formed from a corrugated foil band (2) and a straight foil band (3), placed one on top of the other, by securing the foil bands, coated in advance with both a layer of support material and a layer of catalyst material, to a central shaft (4), around which the catalytic unit is formed. Thereafter, end supports (5) are secured to the ends of the shaft in such a way that they press somewhat to inside the unit and prevent movement of the foil bands in relation to each other.