(19)

(11)

EP 0 554 320 A1

(12)

(43) Date of publication: 11.08.1993 Bulletin 1993/32 (21) Application number: 91918845.0 (22) Date of filing: 30.10.1991

(51) International Patent Classification (IPC):  B60R 25/ 10( . ) G01G 19/ 12( . ) G01G 19/ 08( . ) (86) International application number: PCT/GB1991/001908 (87) International publication number: WO 1992/007738 (14.05.1992 Gazette 1992/11)

(84) Designated Contracting States: AT BE CH DE FR LI NL SE (30) Priority: 30.10.1990 GB 19900023606 (71) Applicant: G.D. ENGINEERING ASSOCIATES LIMITED Guildford Surrey GU5 0AZ (GB)	(72) Inventor: EDWARDS, David Geoffrey Cranleigh, Surrey GU6 7AQ (GB) (74) Representative: Selby-Lowndes, Guy Francis Charles  Moonrakers Durfold Wood Plaistow Billingshurst West Sussex RH14 0PL Plaistow Billingshurst West Sussex RH14 0PL (GB)