(19)

(11)

EP 1 831 564 A1

(12)

(43) Date of publication: 12.09.2007 Bulletin 2007/37 (21) Application number: 05810999.2 (22) Date of filing: 18.11.2005

(51) International Patent Classification (IPC):  F04B 39/10(2006.01) (86) International application number: PCT/EP2005/056083 (87) International publication number: WO 2006/067011 (29.06.2006 Gazette 2006/26)

(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: 22.12.2004 IT GE20040116 (71) Applicant: Dott.Ing. Mario Cozzani S.R.L. 19021 Arcola (IT)	(72) Inventor: SCHIAVONE, Massimo I-54033 CARRARA (IT) (74) Representative: Porsia, Attilio et al c/o Succ. Ing. Fischetti & Weber Via Caffaro 3/2 16124 Genova 16124 Genova (IT)