(19)

(11)

EP 4 189 222 A1

(12)

(43) Date of publication: 07.06.2023 Bulletin 2023/23 (21) Application number: 21748684.4 (22) Date of filing: 28.07.2021

(51) International Patent Classification (IPC):  F01K 25/06(2006.01) F01K 25/10(2006.01) (52) Cooperative Patent Classification (CPC): F17C 2265/05; F17C 2221/032; F17C 2221/033; F17C 2221/035; F17C 2223/013; F17C 2223/0153; F17C 2223/0161; F17C 2223/033; F17C 2225/0123; F17C 2227/0306; F17C 2260/046; F01K 25/10; F01K 25/06 (86) International application number: PCT/IB2021/056837 (87) International publication number: WO 2022/023987 (03.02.2022 Gazette 2022/05)

(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: 30.07.2020 IT 202000018628 (71) Applicant: SAIPEM S.p.A. 20138 Milano (IT)	(72) Inventors: BERRA, Matteo 20138 Milano (IT) FANTOLINI, Anton Marco 20138 Milano (IT) (74) Representative: Croce, Valeria et al Jacobacci & Partners S.p.A. Via Senato, 8 20121 Milano 20121 Milano (IT)