EP0243951A1
Expired / Lapsed
EP
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A method for encasing a catalytic unit used for the purification of exhaust gases
Assignee: Kemira Oyj
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Filing: 1987-04-29
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Granted: —
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Expires: 2007-04-29
Abstract
Abstract The invention relates to a method for encasing a catalytic unit (1) used for purifying exhaust gases, in which method the unit is placed inside a tube (2) and the ends of the tube are shaped into cones (3), whereby the catalytic unit (1) is secured at its ends to the outer jacket, and thereafter end cones (4) are fastened to the ends of the tube.
Inventors
- 👤 Kauko Kanniainen
- 👤 Veikko Loukeinen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 17:59
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2839; F01N3/2842; F01N2450/00; F01N2450/02; F01N2450/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
131 words
A method for encasing a catalytic unit used for purifying exhaust gases, in which method the casing parts are fitted around at least one catalytic unit, whereafter the casing parts are secured together in order to form a jacket around the unit, characterized in that a metal catalytic unit (1) is placed inside a tube (2), the beginning of the tube having selectively been shaped into a cone (3) in advance, and then the other or both ends of the tube are shaped into cones (3), whereby the catalytic unit fitted inside the tube is secured at its ends to the outer jacket, and thereafter suitable end cones (4) are secured to the ends of the tube, the end cones covering only the tube ends which have been shaped into cones.
Claim 2
Independent Claim
131 words
A method for encasing a catalytic unit used for purifying exhaust gases, in which method the casing parts are fitted around at least one catalytic unit, whereafter the casing parts are secured together in order to form a jacket around the unit, characterized in that a metal catalytic unit (1) is placed inside a tube (2), the beginning of the tube having selectively been shaped into a cone (3) in advance, and then the other or both ends of the tube are shaped into cones (3), whereby the catalytic unit fitted inside the tube is secured at its ends to the outer jacket, and thereafter suitable end cones (4) are secured to the ends of the tube, the end cones covering only the tube ends which have been shaped into cones.
Claim 3
Independent Claim
47 words
A method according to Claim l, characterized in that one or two inward oriented grooves (5) are formed in the tube (2), and two catalytic units (1) are placed in the tube, one end of each unit being retained by the groove/grooves (5) formed in the tube.
Claim 4
Dependent Claim
16 words
A method according to Claim 1 or 2, characterized in that the tube (2) is oval.
Claim 5
Independent Claim
26 words
A method according to any of Claims 1-3, characterized in that the tube is of metal and that the metal end cones are secured by welding.
References Cited (Backward Citations)
US3975826A
Cited
FR2179257A1
Cited
FR2214041A1
Cited
US3892537A
Cited
DE2364425A1
Cited
GB1602991A
Cited
DE3010633A1
Cited
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