(19)

(11)

EP 3 810 314 A1

(12)

(43) Date of publication: 28.04.2021 Bulletin 2021/17 (21) Application number: 19803929.9 (22) Date of filing: 16.05.2019

(51) International Patent Classification (IPC):  B01F 7/22(2006.01) F04D 1/00(2006.01) F04D 29/28(2006.01) F04D 29/62(2006.01) F04D 1/04(2006.01) F04D 29/22(2006.01) F04D 29/42(2006.01) (86) International application number: PCT/NO2019/050109 (87) International publication number: WO 2019/221610 (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: 16.05.2018 NO 20180691 (71) Applicant: Hystad, Tore 5416 Stord (NO)	(72) Inventor: Hystad, Tore 5416 Stord (NO) (74) Representative: Håmsø Patentbyrå AS  P.O. Box 9 4068 Stavanger 4068 Stavanger (NO)