(19)

(11)

EP 0 176 502 A1

(12)

(43) Date of publication: 09.04.1986 Bulletin 1986/15 (21) Application number: 84901566.0 (22) Date of filing: 17.04.1984

(51) International Patent Classification (IPC):  E02F 3/ 48( . ) E02F 7/ 04( . ) (86) International application number: PCT/AU1984/000064 (87) International publication number: WO 1985/004916 (07.11.1985 Gazette 1985/24)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (71) Applicant: WINDERS, BARLOW & MORRISON PTY. LTD. Brisbane, QLD 4000 (AU)	(72) Inventor: CHASELING, Arthur, William Albany Creek, QLD 4035 (AU)