(19)

(11)

EP 0 500 584 A1

(12)

(43) Date of publication: 02.09.1992 Bulletin 1992/36 (21) Application number: 90915779.0 (22) Date of filing: 06.11.1990

(51) International Patent Classification (IPC):  F02C 5/ 12( . ) (86) International application number: PCT/FI1990/000264 (87) International publication number: WO 1991/006754 (16.05.1991 Gazette 1991/11)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 07.11.1989 FI 19890005299 (71) Applicant: KOYKKA, Matti SF-25190 Inkere (FI)	(72) Inventor: KOYKKA, Matti SF-25190 Inkere (FI) (74) Representative: Barlow, Roy James  J.A. KEMP & CO. 14, South Square, Gray's Inn London WC1R 5LX London WC1R 5LX (GB)