(19)

(11)

EP 0 471 671 A1

(12)

(43) Date of publication: 26.02.1992 Bulletin 1992/09 (21) Application number: 90904187.0 (22) Date of filing: 08.03.1990

(51) International Patent Classification (IPC):  B60C 25/ 04( . ) (86) International application number: PCT/AU1990/000096 (87) International publication number: WO 1990/012697 (01.11.1990 Gazette 1990/25)

(84) Designated Contracting States: DE ES FR GB IT NL (30) Priority: 19.04.1989 AU 19890003792 (71) Applicant: KALMSON PTY. LIMITED Seaforth NSW 2092 (AU)	(72) Inventor: GIBSON, John, Edward Seaforth, NSW 2092 (AU) (74) Representative: Vingtoft, Knud Erik  Plougmann & Vingtoft A/S, Sankt Annae Plads 11, P.O. Box 3007 DK-1021 Copenhagen K DK-1021 Copenhagen K (DK)