(19)

(11)

EP 1 848 881 A2

(12)

(88) Date of publication A3: 08.09.2006 (43) Date of publication: 31.10.2007 Bulletin 2007/44 (21) Application number: 06711404.1 (22) Date of filing: 27.01.2006

(51) International Patent Classification (IPC):  F02B 25/20(2006.01) F02B 25/22(2006.01) (86) International application number: PCT/IT2006/000050 (87) International publication number: WO 2006/080044 (03.08.2006 Gazette 2006/31)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 27.01.2005 IT RN20050003 (71) Applicant: Centro Ricerche Technologiche SrL 47900 Rimini (IT)	(72) Inventor: DELLAROSA, Renzo 47900 Rimini (IT) (74) Representative: Sarpi, Maurizio  Studio FERRARIO Via Collina, 36 00187 Roma 00187 Roma (IT)