(19)

(11)

EP 1 347 846 A1

(12)

(43) Date of publication: 01.10.2003 Bulletin 2003/40 (21) Application number: 01999444.1 (22) Date of filing: 03.12.2001

(51) International Patent Classification (IPC)7: B21D 43/00 (86) International application number: PCT/FI0101/047 (87) International publication number: WO 0204/5879 (13.06.2002 Gazette 2002/24)

(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: 04.12.2000 FI 20002653 (71) Applicant: Lillbacka Jetair Oy 62200 Kauhava (FI)	(72) Inventors: TAIJONLAHTI, Jorma FIN-62375 Ylihärmä (FI) LIINAMAA, Kari FIN-62375 Ylihärmä (FI) (74) Representative: Pursiainen, Timo Pekka  Tampereen Patenttitoimisto Oy, Hermiankatu 12B 33720 Tampere 33720 Tampere (FI)