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(11)

EP 2 806 998 A1

(12)

(43) Date of publication: 03.12.2014 Bulletin 2014/49 (21) Application number: 13710554.0 (22) Date of filing: 23.01.2013

(51) International Patent Classification (IPC):  B24B 9/10(2006.01) (86) International application number: PCT/IB2013/050582 (87) International publication number: WO 2013/111069 (01.08.2013 Gazette 2013/31)

(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: 23.01.2012 IT TO20120050 (71) Applicant: Bottero S.p.A. Cuneo (IT)	(72) Inventor: BALBI, Mario I-12100 Cuneo (IT) (74) Representative: Boggio, Luigi et al Studio Torta S.p.A. Via Viotti, 9 10121 Torino 10121 Torino (IT)