(19)

(11)

EP 0 894 418 A1

(12)

(43) Date of publication: 03.02.1999 Bulletin 1999/05 (21) Application number: 97914004.0 (22) Date of filing: 03.04.1997

(51) International Patent Classification (IPC):  H05B 3/ 52( . ) (86) International application number: PCT/AU1997/000217 (87) International publication number: WO 1997/038556 (16.10.1997 Gazette 1997/44)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE (30) Priority: 04.04.1996 AU 1996PN09147 (71) Applicant: Systems Elemental Pty. Limited South Turramurra, NSW 2074 (AU)	(72) Inventor: RAMSAY, Lyall, James Forth Tasmania 7310 (AU) (74) Representative: Nielsen, Henrik Sten, et al  OSTENFELD PATENTBUREAU A/S, Bredgade 41, P.O. Box 1183 1011 Copenhagen K 1011 Copenhagen K (DK)