(19)

(11)

EP 3 781 757 A1

(12)

(43) Date of publication: 24.02.2021 Bulletin 2021/08 (21) Application number: 19715491.7 (22) Date of filing: 08.04.2019

(51) International Patent Classification (IPC):  E04B 2/74(2006.01) E04B 5/40(2006.01) E04B 1/94(2006.01) E04B 9/18(2006.01) (86) International application number: PCT/EP2019/058805 (87) International publication number: WO 2019/201645 (24.10.2019 Gazette 2019/43)

(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: 16.04.2018 EP 18167439 (71) Applicant: Hilti Aktiengesellschaft 9494 Schaan (LI)	(72) Inventors: KLEIN, Manfred 86916 Kaufering (DE) FÖRG, Christian 86807 Buchloe (DE) (74) Representative: Hilti Aktiengesellschaft Corporate Intellectual Property  Feldkircherstrasse 100 Postfach 333 9494 Schaan 9494 Schaan (LI)