(19)

(11)

EP 3 692 262 A1

(12)

(43) Date of publication: 12.08.2020 Bulletin 2020/33 (21) Application number: 18779267.6 (22) Date of filing: 18.09.2018

(51) International Patent Classification (IPC):  F04B 35/04(2006.01) F04B 39/14(2006.01) F04B 39/12(2006.01) (86) International application number: PCT/EP2018/075136 (87) International publication number: WO 2019/063348 (04.04.2019 Gazette 2019/14)

(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: 28.09.2017 US 201762564630 P (71) Applicant: Koninklijke Philips N.V. 5656 AG Eindhoven (NL)	(72) Inventor: VENTRAPRAGADA, Varaprasad 5656 AE Eindhoven (NL) (74) Representative: Philips Intellectual Property & Standards  High Tech Campus 5 5656 AE Eindhoven 5656 AE Eindhoven (NL)