(19)

(11)

EP 2 542 816 A1

(12)

(43) Date of publication: 09.01.2013 Bulletin 2013/02 (21) Application number: 11751390.3 (22) Date of filing: 03.03.2011

(51) International Patent Classification (IPC):  F16L 55/10(2006.01) (86) International application number: PCT/US2011/027096 (87) International publication number: WO 2011/109664 (09.09.2011 Gazette 2011/36)

(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: 03.04.2010 US 716356 03.03.2010 US 716343 03.03.2010 US 716307 (71) Applicant: Abrams, Andrew Bryn Mawr, PA 19010 (US)	(72) Inventor: Abrams, Andrew Bryn Mawr, PA 19010 (US) (74) Representative: Hutter, Jacobus Johannes  Nederlandsch Octrooibureau J.W. Frisolaan 13 2505 LS Den Haag 2505 LS Den Haag (NL)