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(11)

EP 4 244 013 A1

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(43) Date of publication: 20.09.2023 Bulletin 2023/38 (21) Application number: 20961761.2 (22) Date of filing: 10.11.2020

(51) International Patent Classification (IPC):  B23K 9/16(2006.01) B23K 9/32(2006.01) B23K 9/00(2006.01) B23K 35/02(2006.01) (52) Cooperative Patent Classification (CPC): B23K 35/0261; B23K 9/295; B23K 9/173 (86) International application number: PCT/US2020/059821 (87) International publication number: WO 2022/103385 (19.05.2022 Gazette 2022/20)

(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 (71) Applicant: ELCo Enterprises, Inc. Jackson, MI 49201 (US)	(72) Inventor: COOPER, Edward, L. Clarklake, MI 49234 (US) (74) Representative: Dr. Solf & Zapf Patent- und Rechtsanwalts PartG mbB  Candidplatz 15 81543 München 81543 München (DE)