(19)

(11)

EP 1 673 171 A1

(12)

(43) Date of publication: 28.06.2006 Bulletin 2006/26 (21) Application number: 04765851.3 (22) Date of filing: 06.10.2004

(51) International Patent Classification (IPC):  B02C 18/14(1968.09) B02C 18/18(1968.09) (86) International application number: PCT/EP2004/011159 (87) International publication number: WO 2005/039774 (06.05.2005 Gazette 2005/18)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 09.10.2003 IT MI20031938 (71) Applicant: SATRIND S.p.A. 20010 Arluno (IT)	(72) Inventors: CURZIANI, Cesare I-20010 Pogliano Milanese (IT) ROTA, Fabio I-20146 Milan (IT) (74) Representative: Coggi, Giorgio et al Racheli & C. S.p.A. Viale San Michele del Carso, 4 20144 Milano 20144 Milano (IT)