(19)

(11)

EP 3 607 188 A1

(12)

(43) Date of publication: 12.02.2020 Bulletin 2020/07 (21) Application number: 18781085.8 (22) Date of filing: 09.04.2018

(51) International Patent Classification (IPC):  F02B 23/06(2006.01) F02F 3/28(2006.01) F02B 3/06(2006.01) F02B 25/02(2006.01) F02B 77/00(2006.01) (86) International application number: PCT/US2018/026743 (87) International publication number: WO 2018/187811 (11.10.2018 Gazette 2018/41)

(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: 07.04.2017 US 201762483191 P 26.04.2017 US 201762490056 P 02.05.2017 US 201762500475 P 05.09.2017 US 201762554429 P 06.02.2018 US 201862627029 P (71) Applicant: Nautilus Engineering, LLC Wichita, Kansas 67202 (US)

(72) Inventor: RILEY, Matthew T. Wichita Kansas 67202 (US) (74) Representative: Herrero & Asociados, S.L.  Cedaceros, 1 28014 Madrid 28014 Madrid (ES)