(19)

(11)

EP 2 092 538 A1

(12)

(43) Date of publication: 26.08.2009 Bulletin 2009/35 (21) Application number: 07825566.8 (22) Date of filing: 29.10.2007

(51) International Patent Classification (IPC):  H01F 5/02(2006.01) B23Q 3/154(2006.01) H01F 5/04(2006.01) (86) International application number: PCT/IB2007/003314 (87) International publication number: WO 2008/059332 (22.05.2008 Gazette 2008/21)

(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 MT NL PL PT RO SE SI SK TR (30) Priority: 16.11.2006 IT MI20062202 (71) Applicants: Politecnico di Milano 20133 Milano (IT) Tecnomagnete S.p.A. 20020 Lainate (IT)	(72) Inventors: CARDONE, Michele 20090 Trezzano S/N (MI) (IT) COSMAI, Giovanni 20027 Rescaldina (MI) (IT) FARANDA, Roberto 20151 Milano (IT) GIGLIO, Antonino 20016 Pero (MI) (IT) (74) Representative: Bonvicini, Davide  Perani Mezzanotte & Partners Piazza San Babila, 5 20122 Milano 20122 Milano (IT)