(19)

(11)

EP 0 046 757 A1

(12)

(43) Date of publication: 10.03.1982 Bulletin 1982/10 (21) Application number: 80902271.0 (22) Date of filing: 26.11.1980

(51) International Patent Classification (IPC):  E02D 29/ 02( . ) E04B 2/ 86( . ) E04H 4/ 00( . ) E04B 1/ 35( . ) E04C 5/ 06( . ) (86) International application number: PCT/AU1980/000100 (87) International publication number: WO 1981/001722 (25.06.1981 Gazette 1981/15)

(84) Designated Contracting States: AT CH DE FR GB LI NL SE (30) Priority: 06.12.1979 AU 19790001628 13.02.1980 AU 19800002345 22.02.1980 AU 19800002503 17.07.1980 AU 19800004575 (71) Applicant: HART, Garry Randall Darwin, N.T. 5790 (AU)	(72) Inventor: HART, Garry Randall Darwin, N.T. 5790 (AU)