(19)

(11)

EP 1 451 539 A1

(12)

(43) Date of publication: 01.09.2004 Bulletin 2004/36 (21) Application number: 02778166.5 (22) Date of filing: 21.10.2002

(51) International Patent Classification (IPC)7: G01G 19/12 (86) International application number: PCT/SE2002/001909 (87) International publication number: WO 2003/044472 (30.05.2003 Gazette 2003/22)

(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: 23.11.2001 SE 0103928 (71) Applicant: VOLVO LASTVAGNAR AB 405 08 Göteborg (SE)	(72) Inventor: LUNDMARK, Andreas S-414 68 Göteborg (SE) (74) Representative: Fröhling, Werner  Volvo Technology Corporation,Corporate Patents,06820, M1.7 405 08 Göteborg 405 08 Göteborg (SE)