(19)

(11)

EP 0 221 059 A1

(12)

(43) Date of publication: 13.05.1987 Bulletin 1987/20 (21) Application number: 85902936.0 (22) Date of filing: 13.06.1985

(51) International Patent Classification (IPC):  D05C 15/ 26( . ) (86) International application number: PCT/AU1985/000128 (87) International publication number: WO 1986/000098 (03.01.1986 Gazette 1986/01)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 13.06.1984 AU 19840005492 (71) Applicants: BOERKAMP, Gerrit Gohannes Rivervale, W.A. 6103 (AU) LIEBREGTS, Johannus Adrianus Antonius Embleton, W.A. 6062 (AU)	(72) Inventor: LIEBREGTS, Johannus, Adrianus, Antonius Embleton, W.A.6062 (AU) (74) Representative: Cardwell, Stuart Martin, et al  Roystons Tower Building Water Street Liverpool, Merseyside L3 1BA Liverpool, Merseyside L3 1BA (GB)