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(11)

EP 1 272 787 A1

(12)

(43) Date of publication: 08.01.2003 Bulletin 2003/02 (21) Application number: 01923418.6 (22) Date of filing: 03.04.2001

(51) International Patent Classification (IPC)7: F16L 23/032, F01N 7/18, F01N 7/16, F16L 23/024 (86) International application number: PCT/CA0100/474 (87) International publication number: WO 0107/5348 (11.10.2001 Gazette 2001/41)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 03.04.2000 US 194765 P (71) Applicant: Maxtech Manufacturing Inc. Waterloo,Ontario N2V 2E7 (CA)	(72) Inventor: VASUDEVA, Kailash, C. Waterloo, Ontario N2J 4G8 (CA) (74) Representative: Maggs, Michael Norman et al Kilburn & Strode20 Red Lion Street London WC1R 4PJ London WC1R 4PJ (GB)