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(11)

EP 3 884 170 A1

(12)

(43) Date of publication: 29.09.2021 Bulletin 2021/39 (21) Application number: 18940718.2 (22) Date of filing: 21.11.2018

(51) International Patent Classification (IPC):  F16B 1/02(2006.01) F15B 7/10(2006.01) (52) Cooperative Patent Classification (CPC): F04B 49/24; F15B 7/10; F04B 1/20; F16B 1/02 (86) International application number: PCT/US2018/062273 (87) International publication number: WO 2020/106291 (28.05.2020 Gazette 2020/22)

(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 (71) Applicant: AOI (Advanced Oilfield Innovations, Dba A.O. International II, Inc.) Stafford, TX 77477 (US)	(72) Inventors: LERNER, Daniel, Maurice Missouri City, TX 77459 (US) ORBAN, Andre Sugar Land, TX 77478 (US) SINGH, Ranjit Houston, TX 77025 (US) (74) Representative: Hellmich, Wolfgang  European Patent and Trademark Attorney Lortzingstrasse 9 / 2. Stock 81241 München 81241 München (DE)