(19)

(11)

EP 0 061 469 A1

(12)

(43) Date of publication: 06.10.1982 Bulletin 1982/40 (21) Application number: 81902621.0 (22) Date of filing: 29.09.1981

(51) International Patent Classification (IPC):  F16K 3/ 28( . ) F24F 13/ 10( . ) F23L 13/ 06( . ) (86) International application number: PCT/AU1981/000141 (87) International publication number: WO 1982/001234 (15.04.1982 Gazette 1982/10)

(84) Designated Contracting States: AT CH DE FR GB LI NL SE (30) Priority: 30.09.1980 AU 19800005826 (71) Applicant: JAMES HOWDEN AUSTRALIA PTY. LIMITED North Sydney N.S.W. 2060 (AU)	(72) Inventor: STEPHENSON, Robert George Panania, N.S.W, 2213 (AU) (74) Representative: Gordon, Richard John Albert, et al  F.J. CLEVELAND & COMPANY 40-43, Chancery Lane London WC2A 1JQ London WC2A 1JQ (GB)