(19)

(11)

EP 0 996 813 A1

(12)

(43) Date of publication: 03.05.2000 Bulletin 2000/18 (21) Application number: 98930545.3 (22) Date of filing: 01.07.1998

(51) International Patent Classification (IPC)7: E21D 20/02 (86) International application number: PCT/AU9800/499 (87) International publication number: WO 9901/641 (14.01.1999 Gazette 1999/02)

(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: 04.07.1997 AU PO772597 (71) Applicant: INDUSTRIAL ROLLFORMERS PTY.LTD. Smithfield, NSW 2164 (AU)	(72) Inventor: FERGUSSON, Jeff Smithfield, NSW 2164 (AU) (74) Representative: Price, Paul Anthony King  D. Young & Co.,21 New Fetter Lane London EC4A 1DA London EC4A 1DA (GB)