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EP 3 794 184 A1

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(43) Date of publication: 24.03.2021 Bulletin 2021/12 (21) Application number: 19803334.2 (22) Date of filing: 20.05.2019

(51) International Patent Classification (IPC):  E03D 1/33(2006.01) E03D 1/32(2006.01) (86) International application number: PCT/US2019/033137 (87) International publication number: WO 2019/222744 (21.11.2019 Gazette 2019/47)

(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: 18.05.2018 GB 201808145 18.05.2018 GB 201808147 18.05.2018 GB 201808142 (71) Applicants: FLUIDMASTER, Inc. San Juan Capistrano, CA 92675 (US) Craig, Andrew Herefordshire Hereford & Worcester HR1 1HT (GB)

(72) Inventor: CRAIG, Andrew Worcester HR1 1HT (GB) (74) Representative: WBH Wachenhausen Patentanwälte PartG mbB  Müllerstraße 40 80469 München 80469 München (DE)