(19)

(11)

EP 1 406 748 A1

(12)

(43) Date of publication: 14.04.2004 Bulletin 2004/16 (21) Application number: 02732231.2 (22) Date of filing: 13.06.2002

(51) International Patent Classification (IPC)7: B24B 55/06, B24B 55/08, B24B 55/10, B28D 7/02 (86) International application number: PCT/AU2002/000771 (87) International publication number: WO 2002/100597 (19.12.2002 Gazette 2002/51)

(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: 13.06.2001 AU PR015664 (71) Applicant: Terpstra Enterprises Pty Ltd Perth, Western Australia 6112 (AU)	(72) Inventor: TERPSTRA, Steven Armadale,Perth,Western Australia 6112 (AU) (74) Representative: Lees, Kate Jane et al Roystons,Tower Building,Water Street Merseyside,Liverpool L3 1BA Merseyside,Liverpool L3 1BA (GB)