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EP 3 837 027 A1

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(43) Date of publication: 23.06.2021 Bulletin 2021/25 (21) Application number: 19849856.0 (22) Date of filing: 13.08.2019

(51) International Patent Classification (IPC):  A63B 53/06(2015.01) A63B 53/12(2015.01) A63B 60/22(2015.01) A63B 53/00(2015.01) A63B 53/14(2015.01) A63B 60/28(2015.01) (86) International application number: PCT/US2019/046407 (87) International publication number: WO 2020/036996 (20.02.2020 Gazette 2020/08)

(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: 13.08.2018 US 201862718298 P (71) Applicant: Karsten Manufacturing Corporation Phoenix, AZ 85029 (US)

(72) Inventors: MILLEMAN, Travis, D. Phoenix, Arizona 85029 (US) SERRANO, Anthony, D. Phoenix, Arizona 85029 (US) COLE, Eric, V. Phoenix, Arizona 85029 (US) KULTALA, David, S. Phoenix, Arizona 85029 (US) PETERSEN, David, L. Phoenix, Arizona 85029 (US) BRYANT, Les, J. Phoenix, Arizona 85029 (US) MACMILLAN, Richard, D. Phoenix, Arizona 85029 (US) SOLESBEE, Rick Phoenix, Arizona 85029 (US) SOLHEIM, John, A. Phoenix, Arizona 85029 (US) GREER, Evan, R. Phoenix, Arizona 85029 (US) (74) Representative: Mewburn Ellis LLP  Aurora Building Counterslip Bristol BS1 6BX Bristol BS1 6BX (GB)