(19)

(11)

EP 3 759 291 A1

(12)

(43) Date of publication: 06.01.2021 Bulletin 2021/01 (21) Application number: 19708102.9 (22) Date of filing: 01.03.2019

(51) International Patent Classification (IPC):  E04B 7/16(2006.01) E04D 13/035(2006.01) E05F 15/635(2015.01) (86) International application number: PCT/EP2019/055104 (87) International publication number: WO 2019/166610 (06.09.2019 Gazette 2019/36)

(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: KH MA MD TN (30) Priority: 02.03.2018 IT 201800003256 (71) Applicant: Tender S.r.l. 47841 Cattolica (RN) (IT)	(72) Inventor: TERENZI, Maurizio 47841 Cattolica (RN) (IT) (74) Representative: Negrini, Elena  Agazzani & Associati S.r.l. Via dell'Angelo Custode 11/6 40141 Bologna 40141 Bologna (IT)