(19)

(11)

EP 2 964 851 A1

(12)

(43) Date of publication: 13.01.2016 Bulletin 2016/02 (21) Application number: 14760606.5 (22) Date of filing: 07.03.2014

(51) International Patent Classification (IPC):  E04F 15/02(2006.01) E04F 15/04(2006.01) (86) International application number: PCT/SE2014/050285 (87) International publication number: WO 2014/137282 (12.09.2014 Gazette 2014/37)

(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 Designated Extension States: BA ME (30) Priority: 08.03.2013 SE 1350279 08.03.2013 US 201361774749 P (71) Applicant: Välinge Innovation AB 263 65 Viken (SE)	(72) Inventors: NYGREN, Per S-253 60 Ramlösa (SE) BERGELIN, Marcus S-263 52 Lerberget (SE) (74) Representative: Engstrand, Ola  Välinge Innovation AB Patent Department Prästavägen 513 263 65 Viken 263 65 Viken (SE)