(19)

(11)

EP 1 337 781 A1

(12)

(43) Date of publication: 27.08.2003 Bulletin 2003/35 (21) Application number: 01978475.0 (22) Date of filing: 12.10.2001

(51) International Patent Classification (IPC)7: F16L 59/02 (86) International application number: PCT/FI0100/886 (87) International publication number: WO 0203/1399 (18.04.2002 Gazette 2002/16)

(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: 12.10.2000 FI 20002248 (71) Applicant: Adiabatix Ltd OY 65320 Vaasa (FI)	(72) Inventors: LAASANEN, Arto FIN-65100 Vaasa (FI) VALKEAPÄÄ, Kari FIN-60320 Seinäjoki (FI) (74) Representative: Niemi, Hakan  Kolster Oy Ab,Iso Roobertinkatu 23,P.O. Box 148 00121 Helsinki 00121 Helsinki (FI)