(19)

(11)

EP 1 436 573 A1

(12)

(43) Date of publication: 14.07.2004 Bulletin 2004/29 (21) Application number: 02758500.9 (22) Date of filing: 12.09.2002

(51) International Patent Classification (IPC)7: G01F 23/292, G01F 23/68 (86) International application number: PCT/FI2002/000731 (87) International publication number: WO 2003/023333 (20.03.2003 Gazette 2003/12)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 12.09.2001 FI 20011798 (71) Applicant: Kari, Matti 15860 Hollola (FI)	(72) Inventor: Kari, Matti 15860 Hollola (FI) (74) Representative: Pelin, Torolf et al Berggren Oy Ab,P.O. Box 16 00101 Helsinki 00101 Helsinki (FI)