(19)

(11)

EP 0 228 376 A1

(12)

(43) Date of publication: 15.07.1987 Bulletin 1987/29 (21) Application number: 85905187.0 (22) Date of filing: 08.10.1985

(51) International Patent Classification (IPC):  E04B 5/ 43( . ) E04B 1/ 342( . ) E04B 1/ 19( . ) (86) International application number: PCT/AU1985/000244 (87) International publication number: WO 1986/002397 (24.04.1986 Gazette 1986/09)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 11.10.1984 AU 19840007588 (71) Applicant: PLASFAB PTY. LTD. Herston, QLD 4006 (AU)	(72) Inventor: MacKENZIE, Noel, Gordon Herston, QLD. 4006 (AU)