(19)

(11)

EP 0 199 797 A1

(12)

(43) Date of publication: 05.11.1986 Bulletin 1986/45 (21) Application number: 85905595.0 (22) Date of filing: 06.11.1985

(51) International Patent Classification (IPC):  E04F 15/ 024( . ) (86) International application number: PCT/AU1985/000270 (87) International publication number: WO 1986/002969 (22.05.1986 Gazette 1986/11)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 06.11.1984 AU 19840007998 (71) Applicant: MATTHEWS, William, John Yarralumla, ACT 2600 (AU)	(72) Inventor: MATTHEWS, William, John Yarralumla, ACT 2600 (AU)