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(11)

EP 0 436 576 A1

(12)

(43) Date of publication: 17.07.1991 Bulletin 1991/29 (21) Application number: 89910405.0 (22) Date of filing: 13.09.1989

(51) International Patent Classification (IPC):  H05H 1/ 34( . ) B05B 7/ 22( . ) C23C 4/ 00( . ) F27D 11/ 08( . ) H05H 1/ 36( . ) H05H 1/ 48( . ) B05B 5/ 06( . ) B23K 10/ 00( . ) C23C 14/ 54( . ) H05B 7/ 148( . ) H05H 1/ 42( . ) (86) International application number: PCT/AU1989/000396 (87) International publication number: WO 1990/003095 (22.03.1990 Gazette 1990/07)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 13.09.1988 AU 19880000388 (71) Applicants: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION Parkville, VIC 3052 (AU) SIDDONS RAMSET LIMITED West Heidelberg Victoria 3081 (AU)	(72) Inventors: DOOLETTE, Ashley, Grant Thornbury, VIC 3071 (AU) OPPENLANDER, Walter, Tilman Greensborough, VIC 3088 (AU) RAMAKRISHNAN, Subramania Glen Waverley, VIC 3150 (AU) (74) Representative: Gordon, Michael Vincent, et al  GILL JENNINGS & EVERY, Broadgate House, 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)