(19)

(11)

EP 0 159 983 A1

(12)

(43) Date of publication: 06.11.1985 Bulletin 1985/45 (21) Application number: 84900002.0 (22) Date of filing: 14.12.1983

(51) International Patent Classification (IPC):  A01F 15/ 07( . ) (86) International application number: PCT/AU1983/000184 (87) International publication number: WO 1984/002253 (21.06.1984 Gazette 1984/15)

(84) Designated Contracting States: AT CH DE FR GB LI NL SE (30) Priority: 17.12.1982 AU 19820007327 (71) Applicants: WEBB, Dennis Leslie Healesville, VIC. 3777 (AU) WEBB, Sonia Edith Healesville, VIC 3777 (AU)	(72) Inventor: WEBB, Dennis Leslie Vic 3777 Healesville (AU) (74) Representative: Masch, Karl Gerhard, Dr., et al  Patentanwälte, Andrejewski, Honke & Partner, Postfach 10 02 54 D-45002 Essen D-45002 Essen (DE)