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(11)

EP 2 668 371 A2

(12)

(88) Date of publication A3: 14.03.2013 (43) Date of publication: 04.12.2013 Bulletin 2013/49 (21) Application number: 12707908.5 (22) Date of filing: 25.01.2012

(51) International Patent Classification (IPC):  F01C 21/10(2006.01) F04C 15/00(2006.01) F04C 2/18(2006.01) F04C 15/06(2006.01) (86) International application number: PCT/IB2012/050350 (87) International publication number: WO 2012/101588 (02.08.2012 Gazette 2012/31)

(84) Designated Contracting States: AL 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 RS SE SI SK SM TR (30) Priority: 25.01.2011 IT BO20110025 (71) Applicant: TRW Automotive Italia S.r.l. Torino (IT)	(72) Inventors: GAMBETTI, Davide I-44100 Ferrara (IT) ZAMBARDI, Roberto I-44025 Massafiscaglia (IT) BERTAGNA, Bruno I-45030 Occhiobello (IT) (74) Representative: Manconi, Stefano et al Studio Torta S.p.A. Via Viotti, 9 10121 Torino 10121 Torino (IT)