(19)

(11)

EP 0 233 907 A1

(12)

(43) Date of publication: 02.09.1987 Bulletin 1987/36 (21) Application number: 86904863.0 (22) Date of filing: 31.07.1986

(51) International Patent Classification (IPC):  H01T 1/ 14( . ) H02H 9/ 06( . ) (86) International application number: PCT/GB1986/000463 (87) International publication number: WO 1987/000984 (12.02.1987 Gazette 1987/04)

(84) Designated Contracting States: BE CH DE FR IT LI NL SE (30) Priority: 05.08.1985 GB 19850019603 30.10.1985 GB 19850026724 (71) Applicant: Dubilier plc Frome Somerset BA11 1PP (GB)	(72) Inventors: HUNT, Alastair, Mark Wiltshire BA14 6JR (GB) LEVITT, William, Arthur Somerset BA11 2TZ (GB) (74) Representative: Warren, Francis Charles  Baron & Warren 18 South End Kensington London W8 5BU London W8 5BU (GB)