(19)

(11)

EP 1 235 736 A1

(12)

(43) Date of publication: 04.09.2002 Bulletin 2002/36 (21) Application number: 00974181.0 (22) Date of filing: 15.11.2000

(51) International Patent Classification (IPC)7: B66D 1/00 (86) International application number: PCT/AU0001/392 (87) International publication number: WO 0103/5712 (25.05.2001 Gazette 2001/21)

(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: 15.11.1999 AU PQ994030 (71) Applicant: MUIR ENGINEERING PTY. LIMITED Kingston,Tas 7050 (AU)	(72) Inventor: MUIR, Robert, John Kingston, TAS 7050 (AU) (74) Representative: Draper, Martyn John et al Boult Wade TennantVerulam Gardens70 Gray's Inn Road London WC1X 8BT London WC1X 8BT (GB)