(19)

(11)

EP 0 240 519 A1

(12)

(43) Date of publication: 14.10.1987 Bulletin 1987/42 (21) Application number: 86905680.0 (22) Date of filing: 30.09.1986

(51) International Patent Classification (IPC):  G01R 31/ 00( . ) H05B 41/ 00( . ) G01R 31/ 06( . ) (86) International application number: PCT/AU1986/000282 (87) International publication number: WO 1987/002143 (09.04.1987 Gazette 1987/08)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 30.09.1985 AU 19850002667 22.10.1985 AU 19850003023 16.04.1986 AU 19860005495 (71) Applicants: BAKER, Edward Joseph Revesby, NSW 2212 (AU) PRIEM, Errol Franklin St. Marys, NSW 2760 (AU) BAKER, Robert Hamilton Miranda, NSW 2228 (AU)	(72) Inventors: BAKER, Edward Joseph Revesby, NSW 2212 (AU) PRIEM, Errol Franklin St. Marys, NSW 2760 (AU) BAKER, Robert Hamilton Miranda, NSW 2228 (AU) (74) Representative: Boydell, John Christopher, et al  Stevens, Hewlett & Perkins 1 Serjeants' Inn Fleet Street London EC4Y 1LL London EC4Y 1LL (GB)