(19)

(11)

EP 2 694 248 A1

(12)

(43) Date of publication: 12.02.2014 Bulletin 2014/07 (21) Application number: 12722514.2 (22) Date of filing: 04.04.2012

(51) International Patent Classification (IPC):  B24B 7/18(2006.01) B24D 7/06(2006.01) B24B 23/02(2006.01) B24D 13/14(2006.01) (86) International application number: PCT/IB2012/051652 (87) International publication number: WO 2012/137143 (11.10.2012 Gazette 2012/41)

(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: 06.04.2011 IT RM20110173 (71) Applicant: Di Mattia, Mauro 04011 Aprilia (IT)	(72) Inventor: Di Mattia, Mauro 04011 Aprilia (IT) (74) Representative: Romano, Giuseppe et al Società Italiana Brevetti S.p.A Piazza di Pietra, 39 I-00186 Roma I-00186 Roma (IT)