(19)

(11)

EP 3 841 244 A1

(12)

(43) Date of publication: 30.06.2021 Bulletin 2021/26 (21) Application number: 19856318.1 (22) Date of filing: 20.08.2019

(51) International Patent Classification (IPC):  D07B 1/14(2006.01) F16G 11/08(2006.01) D07B 7/16(2006.01) (86) International application number: PCT/US2019/047125 (87) International publication number: WO 2020/046621 (05.03.2020 Gazette 2020/10)

(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: 21.08.2018 US 201816106364 (71) Applicant: Campbell, Richard V. Havana, FL 32333 (US)	(72) Inventor: Campbell, Richard V. Havana, FL 32333 (US) (74) Representative: JENSEN & SON  366-368 Old Street London EC1V 9LT London EC1V 9LT (GB)