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(11)

EP 2 971 931 A1

(12)

(43) Date of publication: 20.01.2016 Bulletin 2016/03 (21) Application number: 14767529.2 (22) Date of filing: 14.03.2014

(51) International Patent Classification (IPC):  F17C 3/08(2006.01) F17C 9/00(2006.01) F17C 3/02(2006.01) (86) International application number: PCT/US2014/027413 (87) International publication number: WO 2014/152505 (25.09.2014 Gazette 2014/39)

(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 (30) Priority: 15.03.2013 US 201361799886 P 15.08.2013 US 201361866062 P (71) Applicants: Worthington Cylinders Corporation Worthington, OH 43085 (US) Ames, Greg Churchill Worthington, OH 43085 (US) Getter, James M. Worthington, OH 43085 (US) Hall, Christopher Carl Worthington, OH 43085 (US) Hayes, Charles T. Worthington, OH 43085 (US) Kopczweski, Michael Thomas Columbus, OH 43231 (US) Lease, Thomas L. Worthington, OH 43085 (US) Murray, Sean Aaron Worthington, OH 43085 (US) Perkins, Jay F. Columbus, OH 43231 (US) Ruggles, Adam M. Columbus, OH 43231 (US) Teufel, Rainer Bernhard Columbus, OH 43231 (US) Vangilder, Joel D. Worthington, OH 43085 (US) Zemskov, Igor Ivanovich Columbus, OH 43231 (US)

(72) Inventors: AMES, Greg, Churchill Worthington, OH 43085 (US) GETTER, James, M. Worthington, OH 43085 (US) HALL, Christopher, Carl Worthington, OH 43085 (US) HAYES, Charles, T. Worthington, OH 43085 (US) KOPCZWESKI, Michael, Thomas Columbus, OH 43231 (US) LEASE, Thomas, L. Worthington, OH 43085 (US) MURRAY, Sean, Aaron Worthington, OH 43085 (US) PERKINS, Jay, F. Columbus, OH 43231 (US) RUGGLES, Adam, M. Columbus, OH 43231 (US) TEUFEL, Rainer, Bernhard Columbus, OH 43231 (US) VANGILDER, Joel, D. Worthington, OH 43085 (US) ZEMSKOV, Igor, Ivanovich Columbus, OH 43231 (US) (74) Representative: Coyle, Philip Aidan  F. R. Kelly & Co. 27 Clyde Road Ballsbridge Dublin 4 Dublin 4 (IE)