(19)

(11)

EP 2 528 688 A1

(12)

(43) Date of publication: 05.12.2012 Bulletin 2012/49 (21) Application number: 11711628.5 (22) Date of filing: 28.01.2011

(51) International Patent Classification (IPC):  B02C 18/14(2006.01) B02C 18/22(2006.01) B02C 19/00(2006.01) B02C 18/16(2006.01) B02C 18/00(2006.01) (86) International application number: PCT/IB2011/000142 (87) International publication number: WO 2011/092588 (04.08.2011 Gazette 2011/31)

(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: 29.01.2010 IT UD20100016 (71) Applicant: Colombo Giovanni Srl 21020 Daverio (IT)	(72) Inventor: COLOMBO, Claudio I-21100 Varese (IT) (74) Representative: Petraz, Davide Luigi et al GLP Srl Piazzale Cavedalis, 6/2 33100 Udine 33100 Udine (IT)