(19)

(11)

EP 0 983 471 A1

(12)

(43) Date of publication: 08.03.2000 Bulletin 2000/10 (21) Application number: 98922922.4 (22) Date of filing: 20.05.1998

(51) International Patent Classification (IPC)7: F21V 25/00, F21S 1/02 (86) International application number: PCT/GB9801/459 (87) International publication number: WO 9854/512 (03.12.1998 Gazette 1998/48)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 29.05.1997 GB 9711005 (71) Applicant: ENVIRONMENTAL SEALS LIMITED Nr. Dover,Kent CT15 7JG (GB)	(72) Inventor: WARD, Derek, Alfred MaydensoleDoverKent CT15 5HR (GB) (74) Representative: Fry, Alan Valentine et al FRY HEATH & SPENCEThe Old College53 High Street HorleySurrey RH6 7BN HorleySurrey RH6 7BN (GB)