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(11)

EP 2 718 741 A1

(12)

(43) Date of publication: 16.04.2014 Bulletin 2014/16 (21) Application number: 12796247.0 (22) Date of filing: 07.06.2012

(51) International Patent Classification (IPC):  G01S 15/88(2006.01) F16L 13/02(2006.01) F17D 5/00(2006.01) B23K 37/00(2006.01) F16L 55/26(2006.01) (86) International application number: PCT/CA2012/050383 (87) International publication number: WO 2012/167380 (13.12.2012 Gazette 2012/50)

(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: 08.06.2011 US 201161494602 P (71) Applicant: ShawCor Ltd. Toronto, Ontario M9W 1M7 (CA)	(72) Inventors: PRENTICE, Garth Rodney Conroe, Texas 77302 (US) DRAKE, Stephen Geoffrey Great Yarmouth Norfolk NR29 5RA (GB) (74) Representative: Huhn, Michael  Patentanwalt Im Mediapark 6A 50670 Köln 50670 Köln (DE)