(19)

(11)

EP 0 216 774 A1

(12)

(43) Date of publication: 08.04.1987 Bulletin 1987/15 (21) Application number: 85903182.0 (22) Date of filing: 02.07.1985

(51) International Patent Classification (IPC):  F02M 41/ 06( . ) F02M 59/ 02( . ) F02M 59/ 30( . ) F02M 69/ 12( . ) F02M 55/ 00( . ) F02M 59/ 06( . ) F02M 63/ 02( . ) (86) International application number: PCT/AU1985/000147 (87) International publication number: WO 1986/000667 (30.01.1986 Gazette 1986/03)

(84) Designated Contracting States: AT BE CH DE GB IT LI LU NL SE (30) Priority: 03.07.1984 AU 19840005814 (71) Applicants: BARALABA PTY. LTD. Perth, W.A. 6000 (AU) BARRACK TECHNOLOGY LTD. Perth, W.A. 6000 (AU)	(72) Inventor: LAMPARD, Robert Douglas Welshpool, W.A. 6106 (AU) (74) Representative: Geldard, David Guthrie  URQUHART-DYKES AND LORD Tower House Merrion Way Leeds West Yorkshire LS2 8PA Leeds West Yorkshire LS2 8PA (GB)