(19)

(11)

EP 0 221 067 A1

(12)

(43) Date of publication: 13.05.1987 Bulletin 1987/20 (21) Application number: 85903641.0 (22) Date of filing: 18.07.1985

(51) International Patent Classification (IPC):  B21D 22/ 18( . ) (86) International application number: PCT/AU1985/000160 (87) International publication number: WO 1986/000836 (13.02.1986 Gazette 1986/04)

(84) Designated Contracting States: DE FR GB IT NL (30) Priority: 18.07.1984 AU 19840006065 (71) Applicant: HALBUN HOLDINGS PTY.LTD. Mona Vale, NSW 2103 (AU)	(72) Inventor: RAWSON-HARRIS, Douglas Neutral Bay, NSW 2089 (AU)