(19)

(11)

EP 3 807 539 A1

(12)

(43) Date of publication: 21.04.2021 Bulletin 2021/16 (21) Application number: 17728454.4 (22) Date of filing: 17.05.2017

(51) International Patent Classification (IPC):  F04C 23/00(2006.01) F15B 11/072(2006.01) F04F 1/10(2006.01) (86) International application number: PCT/EP2017/061862 (87) International publication number: WO 2017/198725 (23.11.2017 Gazette 2017/47)

(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 (71) Applicant: Enairys Powertech SA 1015 Lausanne (CH)	(72) Inventor: LEMOFOUET, Sylvain 1020 Renens (CH) (74) Representative: Cronin, Brian Harold John  Cronin Intellectual Property Chemin de la Vuarpillière 29 1260 Nyon 1260 Nyon (CH)