(19)

(11)

EP 3 394 343 A1

(12)

(43) Date of publication: 31.10.2018 Bulletin 2018/44 (21) Application number: 16762048.3 (22) Date of filing: 03.03.2016

(51) International Patent Classification (IPC):  E01F 9/529(2016.01) (86) International application number: PCT/SE2016/000007 (87) International publication number: WO 2016/144227 (15.09.2016 Gazette 2016/37)

(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: 11.03.2015 SE 1500128 (71) Applicants: Hay, Erik 118 52 Stockholm (SE) Nordstöm, Anders 196 38 Kungsängen (SE)	(72) Inventors: Hay, Erik 118 52 Stockholm (SE) Nordstöm, Anders 196 38 Kungsängen (SE) (74) Representative: Bjerkéns Patentbyrå KB (Gävle)  Box 1274 801 37 Gävle 801 37 Gävle (SE)