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(11)

EP 3 596 281 A1

(12)

(43) Date of publication: 22.01.2020 Bulletin 2020/04 (21) Application number: 18768435.2 (22) Date of filing: 16.03.2018

(51) International Patent Classification (IPC):  E04B 2/74(2006.01) E04B 2/78(2006.01) E04C 2/52(2006.01) E04F 13/074(2006.01) A47B 96/06(2006.01) (86) International application number: PCT/FI2018/050194 (87) International publication number: WO 2018/167372 (20.09.2018 Gazette 2018/38)

(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 (30) Priority: 16.03.2017 FI 20175235 (71) Applicant: Spesiaaliasennus Oy 58500 Punkaharju (FI)	(72) Inventor: VIHAVAINEN, Mika 58500 Punkaharju (FI) (74) Representative: Kolster Oy Ab  (Salmisaarenaukio 1) P.O. Box 204 00181 Helsinki 00181 Helsinki (FI)