(19)

(11)

EP 1 623 148 A1

(12)

(43) Date of publication: 08.02.2006 Bulletin 2006/06 (21) Application number: 03739881.5 (22) Date of filing: 31.07.2003

(51) International Patent Classification (IPC):  F16K 1/02(1968.09) F16K 5/00(1968.09) E03C 1/042(1968.09) F16K 1/32(1968.09) E03C 1/04(1968.09) (86) International application number: PCT/AU2003/000974 (87) International publication number: WO 2004/011830 (05.02.2004 Gazette 2004/06)

(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 (30) Priority: 31.07.2002 AU 2002950501 (71) Applicant: Dorf Clark Industries Limited Brisbane, Queensland 4000 (AU)	(72) Inventors: STONE, David, George Baulkham Hills, New South Wales 2153 (AU) EDWARDS, Gary, Bruce Emu Heights, New South Wales 2750 (AU) (74) Representative: Jump, Timothy John Simon et al Venner Shipley LLP 20 Little Britain London EC1A 7DH London EC1A 7DH (GB)