(19)

(11)

EP 2 700 141 A1

(12)

(43) Date of publication: 26.02.2014 Bulletin 2014/09 (21) Application number: 12714333.7 (22) Date of filing: 18.04.2012

(51) International Patent Classification (IPC):  H02J 7/00(2006.01) (86) International application number: PCT/EP2012/057083 (87) International publication number: WO 2012/143396 (26.10.2012 Gazette 2012/43)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 19.04.2011 EP 11162993 (71) Applicant: 4Esys 3001 Leuven (BE)	(72) Inventors: VIDAEL, Rudolf B-3000 Leuven (BE) VERHAEVEN, Eric B-2460 Kasterlee (BE) (74) Representative: BiiP cvba  Culliganlaan 1B 1831 Diegem (Bruxelles) 1831 Diegem (Bruxelles) (BE)