(19)

(11)

EP 2 776 646 A1

(12)

(43) Date of publication: 17.09.2014 Bulletin 2014/38 (21) Application number: 11808372.4 (22) Date of filing: 10.11.2011

(51) International Patent Classification (IPC):  E04G 5/00(2006.01) (86) International application number: PCT/IT2011/000371 (87) International publication number: WO 2013/069031 (16.05.2013 Gazette 2013/20)

(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 (71) Applicant: Gravina's Project S.A.S. 56121 Pisa (PI) (IT)	(72) Inventor: GRAVINA, Giovanni 56121 Putignano (PI) (IT) (74) Representative: Celestino, Marco  ABM Agenzia Brevetti & Marchi, Viale Giovanni Pisano, 31 56123 Pisa 56123 Pisa (IT)