(19)

(11)

EP 1 144 943 A1

(12)

(43) Date of publication: 17.10.2001 Bulletin 2001/42 (21) Application number: 99966764.5 (22) Date of filing: 14.12.1999

(51) International Patent Classification (IPC)7: F42D 1/08, F42D 1/18, F42D 1/22, F42D 3/04, F42D 5/045, F42B 3/26 (86) International application number: PCT/AU9901/107 (87) International publication number: WO 0036/364 (22.06.2000 Gazette 2000/25)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 14.12.1998 AU PP769998 17.05.1999 US 134438 P (71) Applicant: Rocktek Ltd. Pinjarra, W.A. 6208 (AU)	(72) Inventors: GAVRILOVIC, Mihailo Golden, CO 80401 (US) MICKE, Brian Golden, CO 80401 (US) (74) Representative: Schlich, George William et al Mathys & SquireEuropean Patent Attorneys,100 Gray's Inn Road London WC1X 8AL London WC1X 8AL (GB)