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(11)

EP 3 630 409 A1

(12)

(43) Date of publication: 08.04.2020 Bulletin 2020/15 (21) Application number: 18806671.6 (22) Date of filing: 21.05.2018

(51) International Patent Classification (IPC):  B23K 26/21(2014.01) B23K 31/02(2006.01) B33Y 50/02(2015.01) G01N 27/90(2006.01) B23K 31/12(2006.01) B33Y 70/00(2020.01) G01R 33/04(2006.01) (86) International application number: PCT/US2018/033657 (87) International publication number: WO 2018/217626 (29.11.2018 Gazette 2018/48)

(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: 23.05.2017 US 201762509816 P (71) Applicant: Edison Welding Institute, Inc. Columbus, OH 43221 (US)	(72) Inventor: TODOROV, Evgueni, I. Loveland CO 80537 (US) (74) Representative: Mewburn Ellis LLP  City Tower 40 Basinghall Street London EC2V 5DE London EC2V 5DE (GB)