(19)

(11)

EP 4 284 656 A1

(12)

(43) Date of publication: 06.12.2023 Bulletin 2023/49 (21) Application number: 22705128.1 (22) Date of filing: 21.01.2022

(51) International Patent Classification (IPC):  B44C 3/12(2006.01) (52) Cooperative Patent Classification (CPC): B44C 3/126; E01C 2201/167; B44C 3/123 (86) International application number: PCT/IB2022/050505 (87) International publication number: WO 2022/162510 (04.08.2022 Gazette 2022/31)

(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: 26.01.2021 PT 2021117031 (71) Applicant: Fravizel - Equipamentos Metalomecânicos, S.A. 2025-999 Alcanede (PT)	(72) Inventor: VICENTE FRAZÃO, Eliseu Manuel 2025-999 Alcanede (PT) (74) Representative: do Nascimento Gomes, Rui  J. Pereira da Cruz, S.A. Rua Victor Cordon, 10-A 1249-103 Lisboa 1249-103 Lisboa (PT)