(19)

(11)

EP 0 220 178 A1

(12)

(43) Date of publication: 06.05.1987 Bulletin 1987/19 (21) Application number: 85903183.0 (22) Date of filing: 02.07.1985

(51) International Patent Classification (IPC):  F02B 19/ 02( . ) F02B 19/ 12( . ) F02B 19/ 10( . ) F02B 1/ 04( . ) (86) International application number: PCT/AU1985/000148 (87) International publication number: WO 1986/000664 (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 19840005813 (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)