(19)

(11)

EP 1 350 322 A1

(12)

(43) Date of publication: 08.10.2003 Bulletin 2003/41 (21) Application number: 01983290.6 (22) Date of filing: 09.11.2001

(51) International Patent Classification (IPC)7: H03K 17/68, H03K 17/725, H03K 17/79, G05F 3/04, H05B 39/04, H05B 39/06 (86) International application number: PCT/AU0101/451 (87) International publication number: WO 0204/3244 (30.05.2002 Gazette 2002/22)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 23.11.2000 AU PR163500 (71) Applicant: H.P.M. Industries Pty Ltd. Waterloo,New South Wales 2017 (AU)	(72) Inventor: BIRRELL, Peter Queenscliff, New South Wales 2096 (AU) (74) Representative: Frost, Alex John et al Boult Wade Tennant,Verulam Gardens70 Gray's Inn Road London WC1X 8BT London WC1X 8BT (GB)