(19)

(11)

EP 1 687 511 A1

(12)

(43) Date of publication: 09.08.2006 Bulletin 2006/32 (21) Application number: 04790405.7 (22) Date of filing: 14.10.2004

(51) International Patent Classification (IPC):  F01D 5/14(2006.01) (86) International application number: PCT/EP2004/011546 (87) International publication number: WO 2005/040559 (06.05.2005 Gazette 2005/18)

(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 PL PT RO SE SI SK TR (30) Priority: 17.10.2003 IT BA20030052 (71) Applicant: Pietricola, Paolo 74010 Statte Taranto (IT)	(72) Inventor: Pietricola, Paolo 74010 Statte Taranto (IT) (74) Representative: Lotti, Giorgio  Corso Vittorio Emanuele II 61 10128 Torino 10128 Torino (IT)