(19)

(11)

EP 0 118 498 A1

(12)

(43) Date of publication: 19.09.1984 Bulletin 1984/38 (21) Application number: 83902800.0 (22) Date of filing: 07.09.1983

(51) International Patent Classification (IPC):  B02C 13/ 10( . ) B02C 13/ 286( . ) (86) International application number: PCT/AU1983/000125 (87) International publication number: WO 1984/000904 (15.03.1984 Gazette 1984/07)

(84) Designated Contracting States: CH DE FR GB LI NL (30) Priority: 07.09.1982 AU 19820005762 (71) Applicant: PECK, Norman James Seven Hills NSW 2147 (AU)	(72) Inventor: PECK, Norman James Seven Hills NSW 2147 (AU)