(19)

(11)

EP 2 834 420 A1

(12)

(43) Date of publication: 11.02.2015 Bulletin 2015/07 (21) Application number: 12772982.0 (22) Date of filing: 18.10.2012

(51) International Patent Classification (IPC):  E02D 3/08(2006.01) (86) International application number: PCT/EP2012/070677 (87) International publication number: WO 2013/135317 (19.09.2013 Gazette 2013/38)

(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 Designated Extension States: BA ME (30) Priority: 16.03.2012 WO PCT/EP2012/054702 (71) Applicant: VSL International AG 3098 Köniz (CH)	(72) Inventor: HAYE, Olivier 49400 Bagneux (FR) (74) Representative: BOVARD AG  Optingenstrasse 16 3000 Bern 25 3000 Bern 25 (CH)