(19)

(11)

EP 2 954 117 A1

(12)

(43) Date of publication: 16.12.2015 Bulletin 2015/51 (21) Application number: 14714334.1 (22) Date of filing: 07.02.2014

(51) International Patent Classification (IPC):  E01H 5/06(2006.01) (86) International application number: PCT/IB2014/058864 (87) International publication number: WO 2014/122618 (14.08.2014 Gazette 2014/33)

(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 Designated Extension States: BA ME (30) Priority: 08.02.2013 IT TO20130106 (71) Applicant: Giletta S.p.A. Revello (IT)	(72) Inventor: GILETTA, Enzo I-12038 Revello (IT) (74) Representative: Boggio, Luigi et al Studio Torta S.p.A. Via Viotti, 9 10121 Torino 10121 Torino (IT)