(19)

(11)

EP 1 131 561 A1

(12)

(43) Date of publication: 12.09.2001 Bulletin 2001/37 (21) Application number: 99972292.9 (22) Date of filing: 12.11.1999

(51) International Patent Classification (IPC)7: F04D 29/42, F04D 27/02 (86) International application number: PCT/CA9901/071 (87) International publication number: WO 0029/751 (25.05.2000 Gazette 2000/21)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 13.11.1998 CA 2254043 26.02.1999 US 258286 (71) Applicant: Pratt & Whitney Canada, Inc. Longueuil,Quebec J4G 1A1 (CA)	(72) Inventors: LEBLANC, Andre St. Bruno, Quebec J3V 4P3 (CA) OUELLET, Gilbert Montreal, Quebec H1A 5J2 (CA) (74) Representative: Johnson, Terence Leslie  Edward Evans & Co.,Clifford's Inn,Fetter Lane London EC4A 1BX London EC4A 1BX (GB)