(19)

(11)

EP 0 108 757 A1

(12)

(43) Date of publication: 23.05.1984 Bulletin 1984/21 (21) Application number: 83901314.0 (22) Date of filing: 03.05.1983

(51) International Patent Classification (IPC):  F24J 2/ 05( . ) F24J 2/ 46( . ) (86) International application number: PCT/AU1983/000053 (87) International publication number: WO 1983/003891 (10.11.1983 Gazette 1983/26)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 04.05.1982 AU 19820003845 (71) Applicants: HARDING, Geoffrey Lester Glebe, NSW 2037 (AU) WINDOW, Brian Hornsby Heights, NSW 2077 (AU)	(72) Inventors: HARDING, Geoffrey Lester Glebe, NSW 2037 (AU) WINDOW, Brian Hornsby Heights, NSW 2077 (AU)