(19)

(11)

EP 0 868 590 A1

(12)

(43) Date of publication: 07.10.1998 Bulletin 1998/41 (21) Application number: 96941527.0 (22) Date of filing: 19.12.1996

(51) International Patent Classification (IPC):  E06B 3/ 46( . ) E06B 3/ 988( . ) (86) International application number: PCT/AU1996/000816 (87) International publication number: WO 1997/022778 (26.06.1997 Gazette 1997/27)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 19.12.1995 AU 1995PN07207 (71) Applicant: BHP STEEL (JLA) PTY. Ltd. Melbourne, Victoria 3000 (AU)	(72) Inventors: MATTHEWS, Douglas, Evan North Wollongong, NSW 2500 (AU) TACKO, Ivan Bellambi, NSW 2518 (AU) (74) Representative: Sanderson, Michael John, et al  MEWBURN ELLIS York House 23 Kingsway London WC2B 6HP London WC2B 6HP (GB)