(19)

(11)

EP 2 852 722 A1

(12)

(43) Date of publication: 01.04.2015 Bulletin 2015/14 (21) Application number: 13772407.6 (22) Date of filing: 03.04.2013

(51) International Patent Classification (IPC):  E04F 15/02(2006.01) E04F 15/04(2006.01) (86) International application number: PCT/SE2013/050367 (87) International publication number: WO 2013/151494 (10.10.2013 Gazette 2013/41)

(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: 04.04.2012 SE 1250346 04.04.2012 US 201261620233 P (71) Applicant: Välinge Innovation AB 263 65 Viken (SE)	(72) Inventor: BOO, Christian S-268 77 Kågeröd (SE) (74) Representative: Engstrand, Ola  Välinge Innovation AB Patent Department Prästavägen 513 263 65 Viken 263 65 Viken (SE)