(19)

(11)

EP 1 309 431 A1

(12)

(43) Date of publication: 14.05.2003 Bulletin 2003/20 (21) Application number: 01960767.0 (22) Date of filing: 05.07.2001

(51) International Patent Classification (IPC)7: B27C 5/08, B27L 5/08, G01B 5/08 (86) International application number: PCT/FI0100/642 (87) International publication number: WO 0200/4181 (17.01.2002 Gazette 2002/03)

(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: 12.07.2000 FI 20001653 (71) Applicant: Kemppi, Rauli 80230 Joensuu (FI)	(72) Inventor: Kemppi, Rauli 80230 Joensuu (FI) (74) Representative: Pitkänen, Hannu Alpo Antero  Patent Agency Pitkänen Oy,P.O. Box 1188 70211 Kuopio 70211 Kuopio (FI)