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EP 3 201 396 A1

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(43) Date of publication: 09.08.2017 Bulletin 2017/32 (21) Application number: 15860732.5 (22) Date of filing: 05.10.2015

(51) International Patent Classification (IPC):  E01F 9/512(2016.01) E01F 9/524(2016.01) B29C 70/64(2006.01) E01F 9/518(2016.01) E01F 9/576(2016.01) (86) International application number: PCT/US2015/053965 (87) International publication number: WO 2016/081078 (26.05.2016 Gazette 2016/21)

(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 (30) Priority: 03.10.2014 US 201414506248 (71) Applicants: Flint Trading, Inc. Thomasville, NC 27360 (US) Yakopson, Simon Hickory, NC 28601 (US) Greer, Robert W. Lexington, NC 27295 (US)

(72) Inventors: YAKOPSON, Simon Hickory, NC 28601 (US) GREER, Robert, W. Lexington, NC 27295 (US) (74) Representative: Hellmich, Wolfgang  European Patent and Trademark Attorney Lortzingstrasse 9 / 2. Stock 81241 München 81241 München (DE)