(19)

(11)

EP 0 133 432 A1

(12)

(43) Date of publication: 27.02.1985 Bulletin 1985/09 (21) Application number: 84900491.0 (22) Date of filing: 23.01.1984

(51) International Patent Classification (IPC):  E04H 17/ 12( . ) (86) International application number: PCT/AU1984/000014 (87) International publication number: WO 1984/002944 (02.08.1984 Gazette 1984/18)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 21.01.1983 AU 19830007709 (71) Applicant: A.N.K. DEVELOPMENT CORPORATION (AUST.) PTY. LTD. Edgecliff, NSW 2027 (AU)	(72) Inventors: INNES, Stuart, Martin Edgecliff, NSW 2027 (AU) INNES, Rodney, Mitchell Otahuhu, Auckland (NZ)