(19)

(11)

EP 3 257 049 A1

(12)

(43) Date of publication: 20.12.2017 Bulletin 2017/51 (21) Application number: 16712486.6 (22) Date of filing: 09.02.2016

(51) International Patent Classification (IPC):  G21B 1/23(2006.01) H01S 3/107(2006.01) (86) International application number: PCT/IB2016/050678 (87) International publication number: WO 2016/128895 (18.08.2016 Gazette 2016/33)

(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 Designated Validation States: MA MD (30) Priority: 09.02.2015 IT RE20150006 (71) Applicant: Grandi, Ermanno 41121 Modena (IT)	(72) Inventor: Grandi, Ermanno 41121 Modena (IT) (74) Representative: Brunacci, Marco  BRUNACCI & PARTNERS S.r.l. Via Scaglia Est, 19-31 41126 Modena 41126 Modena (IT)