(19)

(11)

EP 0 830 505 A1

(12)

(43) Date of publication: 25.03.1998 Bulletin 1998/13 (21) Application number: 96919819.0 (22) Date of filing: 24.05.1996

(51) International Patent Classification (IPC):  F03B 17/ 04( . ) (86) International application number: PCT/FI1996/000298 (87) International publication number: WO 1996/037701 (28.11.1996 Gazette 1996/52)

(84) Designated Contracting States: DE DK ES FI FR GB GR IE IT SE (30) Priority: 26.05.1995 FI 19950000876 (71) Applicant: Korhonen, Jaakko Juhani 88900 Kuhmo (FI)	(72) Inventor: Korhonen, Jaakko Juhani 88900 Kuhmo (FI) (74) Representative: Laitinen, Pauli Sakari  Patentti-Laitinen Oy, P.O. Box 29 02771 Espoo 02771 Espoo (FI)