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(11)

EP 0 581 825 A1

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(43) Date of publication: 09.02.1994 Bulletin 1994/06 (21) Application number: 92909112.0 (22) Date of filing: 24.04.1992

(51) International Patent Classification (IPC):  E04G 1/ 14( . ) E04G 7/ 30( . ) (86) International application number: PCT/AU1992/000184 (87) International publication number: WO 1992/019870 (12.11.1992 Gazette 1992/28)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE (30) Priority: 26.04.1991 AU 1991PK05818 (71) Applicant: ADWIN PRODUCTS PTY. LTD. Eastwood, S.A. 5063 (AU)	(72) Inventor: BINYON, Christopher Bayswater, W.A. 6053 (AU) (74) Representative: Jennings, Nigel Robin, et al  KILBURN & STRODE 30 John Street London WC1N 2DD London WC1N 2DD (GB)