(19)

(11)

EP 0 418 287 A1

(12)

(43) Date of publication: 27.03.1991 Bulletin 1991/13 (21) Application number: 89906416.0 (22) Date of filing: 01.06.1989

(51) International Patent Classification (IPC):  F23C 10/ 00( . ) F23C 10/ 22( . ) F27B 15/ 14( . ) F23C 10/ 18( . ) F27B 15/ 10( . ) (86) International application number: PCT/GB1989/000603 (87) International publication number: WO 1989/012202 (14.12.1989 Gazette 1989/29)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 08.06.1988 GB 19880013530 (71) Applicant: MORTIMER TECHNOLOGY HOLDINGS LIMITED Reading Berkshire BG7 3PG (GB)	(72) Inventor: DODSON, Christopher Edward Reading, Berkshire BG7 3PG (GB) (74) Representative: Abbie, Andrew Kenneth, et al  R.G.C. Jenkins & Co. 26 Caxton Street London SW1H 0RJ London SW1H 0RJ (GB)