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(11)

EP 2 923 005 A1

(12)

(43) Date of publication: 30.09.2015 Bulletin 2015/40 (21) Application number: 13798303.7 (22) Date of filing: 25.11.2013

(51) International Patent Classification (IPC):  E04B 2/74(2006.01) E04B 9/18(2006.01) E04B 9/22(2006.01) (86) International application number: PCT/EP2013/074656 (87) International publication number: WO 2014/080022 (30.05.2014 Gazette 2014/22)

(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: 23.11.2012 SE 1251329 (71) Applicant: Akoustos AB 236 38 Höllviken (SE)	(72) Inventors: HAMMER, Per S-296 35 Åhus (SE) ISSAL, Raimo S-212 32 Malmö (SE) (74) Representative: Ström & Gulliksson AB  P.O. Box 4188 203 13 Malmö 203 13 Malmö (SE)