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(11)

EP 4 126 430 A1

(12)

(43) Date of publication: 08.02.2023 Bulletin 2023/06 (21) Application number: 21722598.6 (22) Date of filing: 24.03.2021

(51) International Patent Classification (IPC):  B23D 47/02(1968.09) B27B 5/29(1974.07) B25H 1/06(1968.09) (52) Cooperative Patent Classification (CPC): B23D 47/025; B23D 59/00; B25H 1/0078; B25H 1/04; B25H 1/06; B27B 5/29 (86) International application number: PCT/US2021/023870 (87) International publication number: WO 2021/195201 (30.09.2021 Gazette 2021/39)

(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: 25.03.2020 US 202062994472 P 12.05.2020 US 202016872706 (71) Applicant: Davis Young LLC Westlake, OH 44145 (US)	(72) Inventors: YOUNG, Douglas Port Clinton, OH 43452 (US) DAVIS, William, H. Fairview Park, OH 44126 (US) PISKURA, Robert North Ridgeville, OH 44039 (US) ZAHN, Jeffrey, N. Mentor, OH 44060 (US) (74) Representative: Müller-Boré & Partner Patentanwälte PartG mbB  Friedenheimer Brücke 21 80639 München 80639 München (DE)