(19)

(11)

EP 0 394 268 A1

(12)

(43) Date of publication: 31.10.1990 Bulletin 1990/44 (21) Application number: 88906949.0 (22) Date of filing: 29.07.1988

(51) International Patent Classification (IPC):  H01C 10/ 14( . ) G05D 3/ 12( . ) H02P 25/ 06( . ) G05B 1/ 01( . ) H02K 41/ 035( . ) H04H 60/ 04( . ) (86) International application number: PCT/GB1988/000632 (87) International publication number: WO 1989/001725 (23.02.1989 Gazette 1989/05)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 07.08.1987 GB 19870018751 13.06.1988 GB 19880013919 (71) Applicant: OUT BOARD ELECTRONICS LIMITED London N8 7DG (GB)	(72) Inventors: WYGNANSKI, Wladyslaw London N8 7DG (GB) WHITTAKER, Robin London N8 7DG (GB) (74) Representative: Nash, Keith Wilfrid, et al  KEITH W. NASH & Co. Pearl Assurance House 90-92 Regent Street Cambridge CB2 1DP Cambridge CB2 1DP (GB)