(19)

(11)

EP 2 488 781 A1

(12)

(43) Date of publication: 22.08.2012 Bulletin 2012/34 (21) Application number: 10822966.7 (22) Date of filing: 15.10.2010

(51) International Patent Classification (IPC):  F16L 59/12(2006.01) E04B 1/78(2006.01) (86) International application number: PCT/CA2010/001644 (87) International publication number: WO 2011/044696 (21.04.2011 Gazette 2011/16)

(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 (30) Priority: 15.10.2009 US 251791 P (71) Applicant: Gillis, Allan New Glasgow, Nova Scotia B2H 1K5 (CA)	(72) Inventor: Gillis, Allan New Glasgow, Nova Scotia B2H 1K5 (CA) (74) Representative: Zardi, Marco  M. Zardi & Co. S.A. Via Pioda 6 6900 Lugano 6900 Lugano (CH)