(19)

(11)

EP 0 418 274 A1

(12)

(43) Date of publication: 27.03.1991 Bulletin 1991/13 (21) Application number: 89906117.0 (22) Date of filing: 19.05.1989

(51) International Patent Classification (IPC):  B61J 3/ 06( . ) (86) International application number: PCT/FI1989/000093 (87) International publication number: WO 1989/011410 (30.11.1989 Gazette 1989/28)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 24.05.1988 FI 19880002450 (71) Applicant: TECO-SYSTEMS OY SF-12400 Tervakoski (FI)	(74) Representative: Newby, John Ross, et al  J.Y. & G.W. Johnson Furnival House 14/18 High Holborn London WC1V 6DE London WC1V 6DE (GB)