(19)

(11)

EP 2 364 399 A1

(12)

(43) Date of publication: 14.09.2011 Bulletin 2011/37 (21) Application number: 09797163.4 (22) Date of filing: 01.12.2009

(51) International Patent Classification (IPC):  E21D 11/08(2006.01) (86) International application number: PCT/IB2009/055443 (87) International publication number: WO 2010/064193 (10.06.2010 Gazette 2010/23)

(84) Designated Contracting States: 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 SE SI SK SM TR (30) Priority: 04.12.2008 IT RM20080650 (71) Applicant: Capaldini, Giampaolo 06030 Giano dell'Umbria - PG (IT)	(72) Inventor: Capaldini, Giampaolo 06030 Giano dell'Umbria - PG (IT) (74) Representative: Romano, Giuseppe et al Società Italiana Brevetti S.p.A Piazza di Pietra 38-39 00186 Roma (RM) 00186 Roma (RM) (IT)