(19)

(11)

EP 1 520 132 A2

(12)

(88) Date of publication A3: 01.07.2004 (43) Date of publication: 06.04.2005 Bulletin 2005/14 (21) Application number: 03740871.3 (22) Date of filing: 02.07.2003

(51) International Patent Classification (IPC)7: F16L 37/36 (86) International application number: PCT/IB2003/002580 (87) International publication number: WO 2004/005787 (15.01.2004 Gazette 2004/03)

(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 Designated Extension States: AL LT LV MK (30) Priority: 08.07.2002 US 394353 P (71) Applicant: EATON CORPORATION Cleveland,Ohio 44114-2584 (US)	(72) Inventor: HAUNHORST, Gregory, Alan Perrysburg, OH 43551 (US) (74) Representative: Patentanwälte Rüger, Barthelt & Abel  Webergasse 3 73728 Esslingen 73728 Esslingen (DE)