(19)

(11)

EP 0 606 200 A1

(12)

(43) Date of publication: 20.07.1994 Bulletin 1994/29 (21) Application number: 91917259.0 (22) Date of filing: 30.09.1991

(51) International Patent Classification (IPC):  H01H 21/ 40( . ) (86) International application number: PCT/GB1991/001682 (87) International publication number: WO 1993/007632 (15.04.1993 Gazette 1993/10)

(84) Designated Contracting States: DE ES FR GB IT NL (71) Applicant: DELTA SCHOELLER LIMITED Cheltenham, Glos GL51 9BP (GB)	(72) Inventors: NICHOLS, Robert John Cheltenham, Gloucestershire GL53 8QP (GB) COLLINGS, Reginald Jeffrey Winchcombe, Gloucestershire GL54 5YE (GB) (74) Representative: Shindler, Nigel  BATCHELLOR, KIRK & CO. 2 Pear Tree Court Farringdon Road London EC1R 0DS London EC1R 0DS (GB)