(19)

(11)

EP 1 673 568 A2

(12)

(88) Date of publication A3: 18.08.2005 (43) Date of publication: 28.06.2006 Bulletin 2006/26 (21) Application number: 03774835.7 (22) Date of filing: 15.10.2003

(51) International Patent Classification (IPC):  F16L 5/02(1968.09) F16L 17/06(1968.09) F16L 13/04(1968.09) F16L 17/00(1968.09) F16L 21/04(1968.09) (86) International application number: PCT/US2003/032648 (87) International publication number: WO 2005/047745 (26.05.2005 Gazette 2005/21)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR (71) Applicant: United States Pipe and Foundry Company, LLC Birmingham, AL 35222 (US)	(72) Inventor: COPELAND, Daniel, Albert Bessemer, AL 35022-4123 (US) (74) Representative: Lucas, Brian Ronald et al Lucas & Co. 135 Westhall Road Warlingham Surrey CR6 9HJ Warlingham Surrey CR6 9HJ (GB)