(19)

(11)

EP 0 269 652 A1

(12)

(43) Date of publication: 08.06.1988 Bulletin 1988/23 (21) Application number: 87902650.0 (22) Date of filing: 07.05.1987

(51) International Patent Classification (IPC):  G01H 3/ 00( . ) G10G 7/ 02( . ) G01H 3/ 08( . ) G10H 3/ 18( . ) (86) International application number: PCT/GB1987/000302 (87) International publication number: WO 1987/007068 (19.11.1987 Gazette 1987/25)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 07.05.1986 GB 19860011158 12.09.1986 GB 19860021991 (71) Applicant: YEUBREY, Bryan, Bernard Finchfield Wolverhampton WV3 9HL (GB)	(72) Inventors: GEORGE, Robin Oxley Wolverhampton (GB) YEUBREY, Bryan, Bernard Finchfield, Wolverhampton WV3 9HL (GB) (74) Representative: Prutton, Roger, et al  MARKS & CLERK, Alpha Tower, Suffolk Street Queensway Birmingham B1 1TT Birmingham B1 1TT (GB)