(19)

(11)

EP 1 311 758 A1

(12)

(43) Date of publication: 21.05.2003 Bulletin 2003/21 (21) Application number: 01960814.0 (22) Date of filing: 23.08.2001

(51) International Patent Classification (IPC)7: F03B 17/04 (86) International application number: PCT/FI0100/740 (87) International publication number: WO 0201/6765 (28.02.2002 Gazette 2002/09)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 23.08.2000 FI 20001861 (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)