(19)

(11)

EP 1 488 108 A1

(12)

(43) Date of publication: 22.12.2004 Bulletin 2004/52 (21) Application number: 03744975.8 (22) Date of filing: 20.03.2003

(51) International Patent Classification (IPC)7: F04D 15/00 (86) International application number: PCT/IT2003/000165 (87) International publication number: WO 2003/081050 (02.10.2003 Gazette 2003/40)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 22.03.2002 IT BO20020142 (71) Applicant: Pierburg S.p.A. 66034 Lanciano (IT)	(72) Inventor: DI NUNZIO, Giuseppe I-66030 Treglio (IT) (74) Representative: Jorio, Paolo, Dr. Ing.  Studio Torta S.r.l.,Via Viotti, 9 10121 Torino 10121 Torino (IT)