(19)

(11)

EP 1 053 369 A1

(12)

(43) Date of publication: 22.11.2000 Bulletin 2000/47 (21) Application number: 97910162.3 (22) Date of filing: 07.11.1997

(51) International Patent Classification (IPC)7: E01F 9/013, E04H 12/22 (86) International application number: PCT/AU9700/752 (87) International publication number: WO 9924/672 (20.05.1999 Gazette 1999/20)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: KDC Systems Ltd. Osborne Park, W.A. 6017 (AU)	(72) Inventor: KASTEN, Brian John Innaloo, W.A. 6018 (AU) (74) Representative: Kohn, Philippe  Cabinet Philipp Kohn,30, rue Hoche 93500 Pantin 93500 Pantin (FR)