(19)

(11)

EP 1 504 180 A1

(12)

(43) Date of publication: 09.02.2005 Bulletin 2005/06 (21) Application number: 02722309.8 (22) Date of filing: 06.05.2002

(51) International Patent Classification (IPC)7: F02D 15/02, F02B 75/04 (86) International application number: PCT/FI2002/000380 (87) International publication number: WO 2003/093667 (13.11.2003 Gazette 2003/46)

(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 (71) Applicant: Ritavesi, Kari FIN-53100 Lappeenranta (FI)	(72) Inventor: Ritavesi, Kari FIN-53100 Lappeenranta (FI) (74) Representative: Salonen, Esko Tapani  Forssén & Salomaa Oy,Eerikinkatu 2 00100 Helsinki 00100 Helsinki (FI)