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(11)

EP 2 432 971 A1

(12)

(43) Date of publication: 28.03.2012 Bulletin 2012/13 (21) Application number: 10727974.7 (22) Date of filing: 27.04.2010

(51) International Patent Classification (IPC):  F01C 20/02(2006.01) F15B 11/22(2006.01) (86) International application number: PCT/IT2010/000186 (87) International publication number: WO 2010/134110 (25.11.2010 Gazette 2010/47)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 22.05.2009 IT TO20090391 (71) Applicant: Rolfo S.p.A. 12042 Bra (CN) (IT)	(72) Inventor: ARNULFO, Elio I-12042 Bra (CN) (IT) (74) Representative: Garavelli, Paolo  A.BRE.MAR. S.R.L. Via Servais 27 10146 Torino 10146 Torino (IT)