(19)

(11)

EP 0 083 608 A1

(12)

(43) Date of publication: 20.07.1983 Bulletin 1983/29 (21) Application number: 82902053.0 (22) Date of filing: 14.07.1982

(51) International Patent Classification (IPC):  B61D 47/ 00( . ) (86) International application number: PCT/AU1982/000112 (87) International publication number: WO 1983/000320 (03.02.1983 Gazette 1983/04)

(84) Designated Contracting States: AT BE DE FR GB NL (30) Priority: 15.07.1981 AU 19810009755 (71) Applicant: COMBA PTY. LTD. Welshpool, W.A. 6106 (AU)	(72) Inventor: ROBERTSON, Donald Keir Welshpool, W.A. 6106 (AU) (74) Representative: Matthews, Howard Nicholas, et al  Page Hargrave 2 Tower Street London WC2H 9NP London WC2H 9NP (GB)