(19)

(11)

EP 3 793 756 A1

(12)

(43) Date of publication: 24.03.2021 Bulletin 2021/12 (21) Application number: 19802780.7 (22) Date of filing: 22.04.2019

(51) International Patent Classification (IPC):  B21D 22/21(2006.01) B21D 51/48(2006.01) B21D 51/44(2006.01) B65D 1/16(2006.01) (86) International application number: PCT/US2019/028465 (87) International publication number: WO 2019/221877 (21.11.2019 Gazette 2019/47)

(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: 15.05.2018 US 201815980090 (71) Applicant: Stolle Machinery Company, LLC Centennial, Colorado 80112 (US)	(72) Inventors: STAMMEN, Dennis C. Brookville, Ohio 45309 (US) ALBRIGHT, Steven T. Covington, Ohio 45318 (US) MCCARTY, Patrick K. Dayton, Ohio 45420 (US) DONALDSON, Edward E. Canton, Ohio 44720 (US) (74) Representative: Mewburn Ellis LLP  Aurora Building Counterslip Bristol BS1 6BX Bristol BS1 6BX (GB)