(19)

(11)

EP 3 917 715 A1

(12)

(43) Date of publication: 08.12.2021 Bulletin 2021/49 (21) Application number: 20709767.6 (22) Date of filing: 28.01.2020

(51) International Patent Classification (IPC):  B23K 26/03(2006.01) B08B 7/00(2006.01) B23K 26/362(2014.01) (52) Cooperative Patent Classification (CPC): B23K 26/032; B08B 7/0042; B23K 26/362 (86) International application number: PCT/PL2020/000008 (87) International publication number: WO 2020/159388 (06.08.2020 Gazette 2020/32)

(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: 31.01.2019 PL 42875619 (71) Applicant: Aic Spólka Akcyjna 81-577 Gdynia (PL)	(72) Inventor: PACHOLSKI, Adam 81-603 Gdynia (PL) (74) Representative: Pomianek, Grazyna  Kancelaria Patentowo-Prawna Grazyna Pomianek ul. Subislawa 23 C lok. 7 80-354 Gdansk 80-354 Gdansk (PL)