(19)

(11)

EP 0 642 409 A1

(12)

(43) Date of publication: 15.03.1995 Bulletin 1995/11 (21) Application number: 93910289.0 (22) Date of filing: 26.05.1993

(51) International Patent Classification (IPC):  B29C 65/ 18( . ) B29C 65/ 00( . ) G05D 23/ 20( . ) (86) International application number: PCT/GB1993/001086 (87) International publication number: WO 1993/024302 (09.12.1993 Gazette 1993/29)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IE IT LI NL PT SE (30) Priority: 27.05.1992 GB 19920011249 (71) Applicant: CEETAK DEVELOPMENTS LIMITED Bedford MK41 0QR (GB)	(72) Inventor: BUTTERY, Gerald 10 White Crofts Stotfold Hertfordshire SG5 4EB (GB) (74) Representative: Maguire, Peter Albert, et al  Maguire & Co. 5 Crown Street St. Ives, Cambridgeshire PE17 4EB St. Ives, Cambridgeshire PE17 4EB (GB)