(19)

(11)

EP 0 653 150 A1

(12)

(43) Date of publication: 17.05.1995 Bulletin 1995/20 (21) Application number: 93917958.0 (22) Date of filing: 30.07.1993

(51) International Patent Classification (IPC):  H05B 41/ 298( . ) (86) International application number: PCT/GB1993/001618 (87) International publication number: WO 1994/004011 (17.02.1994 Gazette 1994/05)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 01.08.1992 GB 19920016425 (71) Applicant: COOLITE LIMITED Croydon, Surrey CR0 3HH (GB)	(72) Inventor: HESKETH, John Excil Electronics Excil House Normanton West Yorkshire WF6 1QT (GB) (74) Representative: Spence, Anne  FRY HEATH & SPENCE The Old College 53 High Street Horley Surrey RH6 7BN Horley Surrey RH6 7BN (GB)