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(11)

EP 3 332 353 A1

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(43) Date of publication: 13.06.2018 Bulletin 2018/24 (21) Application number: 16763352.8 (22) Date of filing: 03.08.2016

(51) International Patent Classification (IPC):  G06K 9/20(2006.01) B21D 53/42(2006.01) B23C 3/35(2006.01) B23P 15/00(2006.01) (86) International application number: PCT/US2016/045367 (87) International publication number: WO 2017/024043 (09.02.2017 Gazette 2017/06)

(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: MA MD (30) Priority: 03.08.2015 US 201562200208 P (71) Applicant: Hy-Ko Products Company Northfield, OH 44067 (US)	(72) Inventors: MUTCH, William R. North Ridgeville, Ohio 44039 (US) FIORE, Thomas F. Willowick, Ohio 44095 (US) PORRAS, Randall A. Avon, Ohio 44011 (US) THOMPSON, Chester O. D. Painesville, Ohio 44077 (US) (74) Representative: Müller-Boré & Partner Patentanwälte PartG mbB  Friedenheimer Brücke 21 80639 München 80639 München (DE)