(19)

(11)

EP 1 407 509 A1

(12)

(43) Date of publication: 14.04.2004 Bulletin 2004/16 (21) Application number: 02724328.6 (22) Date of filing: 08.05.2002

(51) International Patent Classification (IPC)7: H01Q 1/24, H01Q 1/32 (86) International application number: PCT/FI2002/000392 (87) International publication number: WO 2002/091516 (14.11.2002 Gazette 2002/46)

(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 (30) Priority: 08.05.2001 FI 20010957 (71) Applicant: RISTO, Antero 76130 Pieksämäki (FI)	(72) Inventor: RISTO, Antero 76130 Pieksämäki (FI) (74) Representative: Helke, Kimmo Kalervo  Kespat Oy,P.O. Box 601 40101 Jyväskylä 40101 Jyväskylä (FI)