(19)
(11) EP 0 896 135 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
30.08.2000 Bulletin 2000/35

(43) Date of publication A2:
10.02.1999 Bulletin 1999/06

(21) Application number: 97306237.5

(22) Date of filing: 15.08.1997
(51) International Patent Classification (IPC)7F01N 3/18, F01N 3/28
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 05.08.1997 GB 9716500

(71) Applicant: Catalytic Support Systems Ltd.
Warrington, Cheshire WA4 2LY (GB)

(72) Inventors:
  • Francis, Paul David
    Warrington, Cheshire WA4 6AU (GB)
  • Fisher, Gary Thomas
    Warrington, Cheshire WA5 1DT (GB)

(74) Representative: Kelvie, George Thomas et al
Urquhart-Dykes & Lord Greg's Buildings 1 Booth Street
Manchester M2 4DU
Manchester M2 4DU (GB)

   


(54) Knitted wire mesh alignment separation and support ring for automotive catalytic converter systems


(57) A profiled knitted metal mesh wire ring interposed between the end of tile fixed metal cone and the nearest face of the ceramic monolithic block containing the catalytic reagents, of such a shape and configuration that it serves to hold the said metal cone and monolithic block in correct axial alignment.
This correct axial alignment ensures the optimum flow of the hot engine exhaust gases from the metal cone into the monolithic block such that the required catalytic reactions may occur.
The flexible construction of the knitted metal mesh wire ring permits the thermal expansion of the fixed metal cone linearly towards the face of the ceramic block to be compensated for without permitting the two components to make contact and cause damage one to the other.





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