(19)

(11)

EP 1 924 521 A1

(12)

(43) Date of publication: 28.05.2008 Bulletin 2008/22 (21) Application number: 06784236.9 (22) Date of filing: 12.09.2006

(51) International Patent Classification (IPC):  B66C 13/56(2006.01) B66D 3/18(2006.01) (86) International application number: PCT/SE2006/050323 (87) International publication number: WO 2007/032735 (22.03.2007 Gazette 2007/12)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 13.09.2005 SE 0502012 (71) Applicant: Swedish Control Systems Aktiebolag 662 34 Amal (SE)	(72) Inventor: OLSSON, Johan S-662 91 Åmål (SE) (74) Representative: Andréasson, Ivar  Hynell Patenttjänst AB Patron Carls väg 2 S-683 40 Uddeholm S-683 40 Uddeholm (SE)