(19)

(11)

EP 0 164 415 A1

(12)

(43) Date of publication: 18.12.1985 Bulletin 1985/51 (21) Application number: 85900394.0 (22) Date of filing: 07.12.1984

(51) International Patent Classification (IPC):  E04H 4/ 16( . ) (86) International application number: PCT/US1984/002018 (87) International publication number: WO 1985/002643 (20.06.1985 Gazette 1985/14)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 09.12.1983 US 19830559926 (71) Applicant: UNITED MIDWEST INTERNATIONAL CORPORATION Cincinati, OH 45202 (US)	(72) Inventor: CANT, Peter, R. Woollahra, NSW 2025 (AU)