(19)

(11)

EP 2 021 270 A1

(12)

(43) Date of publication: 11.02.2009 Bulletin 2009/07 (21) Application number: 07748188.5 (22) Date of filing: 31.05.2007

(51) International Patent Classification (IPC):  B66B 1/28(2006.01) H02H 7/08(2006.01) (86) International application number: PCT/SE2007/000524 (87) International publication number: WO 2007/139477 (06.12.2007 Gazette 2007/49)

(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 MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 01.06.2006 SE 0601212 (71) Applicant: Digisign AB 126 30 Hägersten (SE)	(72) Inventor: WIRGART, Bengt 117 61 Stockholm (SE) (74) Representative: Eriksson, Kjell  Norrtelje Patentbyra AB, P.O.B. 38 761 21 Norrtälje 761 21 Norrtälje (SE)