(19)

(11)

EP 0 414 794 A1

(12)

(43) Date of publication: 06.03.1991 Bulletin 1991/10 (21) Application number: 89906309.0 (22) Date of filing: 10.05.1989

(51) International Patent Classification (IPC):  A47J 37/ 07( . ) F24C 3/ 00( . ) (86) International application number: PCT/AU1989/000198 (87) International publication number: WO 1989/011066 (16.11.1989 Gazette 1989/27)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 10.05.1988 AU 19880008143 (71) Applicant: HERTFORD PTY. LTD. Dulwich, SA 5065 (AU)	(72) Inventor: McDONALD, Ian Ross Leabrook, South Australia (AU) (74) Representative: Guerre, Dominique, et al  Cabinet Germain et Maureau Le Britannia-Tour C 20 Boulevard Eugéne Deruelle BP 3011 F-69392 Lyon Cédex 03 F-69392 Lyon Cédex 03 (FR)