(19)

(11)

EP 0 086 785 A1

(12)

(43) Date of publication: 31.08.1983 Bulletin 1983/35 (21) Application number: 82901126.0 (22) Date of filing: 29.03.1982

(51) International Patent Classification (IPC):  F04D 29/ 38( . ) (86) International application number: PCT/FI1982/000011 (87) International publication number: WO 1982/003430 (14.10.1982 Gazette 1982/25)

(84) Designated Contracting States: AT BE CH DE FR GB LI NL SE (30) Priority: 27.03.1981 FI 19810000946 (71) Applicant: FOEHN OY SF-00870 Helsinki 87 (FI)	(72) Inventor: VARTIALA, Heikki SF-00800 Helsinki 80 (FI) (74) Representative: Zipse + Habersack  Kemnatenstrasse 49 D-80639 München D-80639 München (DE)