(19)

(11)

EP 0 457 877 A1

(12)

(43) Date of publication: 27.11.1991 Bulletin 1991/48 (21) Application number: 91900674.0 (22) Date of filing: 04.12.1990

(51) International Patent Classification (IPC):  E04C 3/ 07( . ) E04C 3/ 04( . ) E04C 3/ 40( . ) (86) International application number: PCT/AU1990/000577 (87) International publication number: WO 1991/009252 (27.06.1991 Gazette 1991/14)

(84) Designated Contracting States: DE ES FR GB IT NL (30) Priority: 08.12.1989 AU 19890007847 (71) Applicant: PELL-MELL PTY. LTD. Salisbury S.A. 5108 (AU)	(72) Inventors: LEWIS, Simon, John Cardwell, QLD 4816 (AU) ROBINSON, Maurice, Desmond Uley Road One Tree Hill, S.A. 5114 (AU) (74) Representative: Heim, Hans-Karl, Dipl.-Ing., et al  Patentanwälte Weber & Heim Hofbrunnstrasse 36 D-81479 München D-81479 München (DE)