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EP 4 028 621 A1

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(43) Date of publication: 20.07.2022 Bulletin 2022/29 (21) Application number: 20785603.0 (22) Date of filing: 14.09.2020

(51) International Patent Classification (IPC):  E06B 1/52(2006.01) E06B 3/08(2006.01) E04B 2/74(2006.01) E04B 2/82(2006.01) E06B 3/02(2006.01) E06B 3/46(2006.01) E04B 2/78(2006.01) E04B 9/00(2006.01) (52) Cooperative Patent Classification (CPC): E06B 1/52; E04B 2/825; E04B 2/7854; E04B 2/745; E06B 1/524; E06B 3/025; E06B 1/18; E06B 3/24; E04B 9/0428; E04B 9/0435; E04B 9/064; E04B 9/008; E04B 9/006; E04C 2003/0417; E04C 2003/0439; E04C 3/06 (86) International application number: PCT/IB2020/058514 (87) International publication number: WO 2021/048828 (18.03.2021 Gazette 2021/11)

(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: 13.09.2019 IT 201900016253 13.09.2019 IT 201900016259 13.09.2019 IT 201900016262 13.09.2019 IT 201900016265 (71) Applicant: C&G S.A.S. Di Ruggero Grandi & C. 36050 Quinto Vicentino (IT)

(72) Inventor: GRANDI, Ruggero 36050 Quinto Vicentino (VI) (IT) (74) Representative: Autuori, Angelo  Autuori & Partners Strada del Megiaro, 261 36100 Vicenza (VI) 36100 Vicenza (VI) (IT)