(19)

(11)

EP 3 638 083 A1

(12)

(43) Date of publication: 22.04.2020 Bulletin 2020/17 (21) Application number: 18732697.0 (22) Date of filing: 11.06.2018

(51) International Patent Classification (IPC):  A47F 5/00(2006.01) A21B 3/15(2006.01) F25D 25/02(2006.01) A21B 3/07(2006.01) F24C 15/16(2006.01) A47F 3/06(2006.01) (86) International application number: PCT/EP2018/065327 (87) International publication number: WO 2018/228980 (20.12.2018 Gazette 2018/51)

(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: 12.06.2017 FI 20175537 (71) Applicant: Porkka Finland Oy 15210 Lahti (FI)	(72) Inventor: KAHROLA, Ari 15610 Lahti (FI) (74) Representative: Heinonen & Co  Attorneys-at-Law Ltd Fabianinkatu 29 B 00100 Helsinki 00100 Helsinki (FI)