(19)

(11)

EP 0 093 139 A1

(12)

(43) Date of publication: 09.11.1983 Bulletin 1983/45 (21) Application number: 82903331.0 (22) Date of filing: 08.11.1982

(51) International Patent Classification (IPC):  G05B 11/ 28( . ) G05D 7/ 06( . ) (86) International application number: PCT/GB1982/000318 (87) International publication number: WO 1983/001693 (11.05.1983 Gazette 1983/11)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL (30) Priority: 06.11.1981 GB 19810033473 22.06.1982 GB 19820018082 (71) Applicant: LEWIS, Henry Christopher Ludlow Salop (GB)	(72) Inventor: LEWIS, Henry Christopher Ludlow Salop (GB) (74) Representative: Cooper, Derek Robert, et al  Marks & Clerk Alpha Tower Suffolk Street Queensway Birmingham B1 1TT Birmingham B1 1TT (GB)