(19)

(11)

EP 0 481 991 A1

(12)

(43) Date of publication: 29.04.1992 Bulletin 1992/18 (21) Application number: 89909802.0 (22) Date of filing: 22.08.1989

(51) International Patent Classification (IPC):  H02B 1/ 052( . ) H02B 1/ 20( . ) (86) International application number: PCT/GB1989/000976 (87) International publication number: WO 1990/002430 (08.03.1990 Gazette 1990/06)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 25.08.1988 GB 19880020158 (71) Applicant: SCHOLES GROUP PLC Wilmslow, Cheshire SK9 1BU (GB)	(72) Inventor: KIDD, Alan, Lister Southport PR8 2LH (GB) (74) Representative: Massey, Alexander, et al  MARKS & CLERK, Sussex House, 83-85 Mosley Street Manchester M2 3LG Manchester M2 3LG (GB)