(19)

(11)

EP 0 793 898 A1

(12)

(43) Date of publication: 10.09.1997 Bulletin 1997/37 (21) Application number: 95937110.0 (22) Date of filing: 27.11.1995

(51) International Patent Classification (IPC):  H05B 3/ 26( . ) H05B 3/ 74( . ) (86) International application number: PCT/GB1995/002751 (87) International publication number: WO 1996/017496 (06.06.1996 Gazette 1996/26)

(84) Designated Contracting States: AT BE CH DE ES FR GB GR IE IT LI NL SE (30) Priority: 26.11.1994 GB 19940023901 (71) Applicant: PIFCO LIMITED Manchester M35 OHS (GB)	(72) Inventor: LITTLE, Peter, James Wiltshire NS14 8NQ (GB) (74) Representative: Bray, Lilian Janet  L. J. Bray & Co. Raw Holme Midgehole Road Hebden Bridge, West Yorkshire HX7 7AF Hebden Bridge, West Yorkshire HX7 7AF (GB)