(19)

(11)

EP 3 218 553 A1

(12)

(43) Date of publication: 20.09.2017 Bulletin 2017/38 (21) Application number: 15801064.5 (22) Date of filing: 13.11.2015

(51) International Patent Classification (IPC):  E04B 9/00(2006.01) E04C 3/02(2006.01) E04B 9/12(2006.01) (86) International application number: PCT/US2015/060574 (87) International publication number: WO 2016/077691 (19.05.2016 Gazette 2016/20)

(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 Designated Validation States: MA MD (30) Priority: 14.11.2014 US 201462080042 P (71) Applicant: Worthington Armstrong Venture Malvern, PA 19355 (US)	(72) Inventors: SAREYKA, Brett Wayne Glen Mills, PA 19342 (US) NEAL, Joshua Lee Elverson, PA 19520 (US) (74) Representative: Locas, Davide et al Cantaluppi & Partners S.r.l. Piazzetta Cappellato Pedrocchi, 18 35122 Padova 35122 Padova (IT)