(19)

(11)

EP 0 216 814 A1

(12)

(43) Date of publication: 08.04.1987 Bulletin 1987/15 (21) Application number: 86901467.0 (22) Date of filing: 05.03.1986

(51) International Patent Classification (IPC):  B64F 1/ 20( . ) (86) International application number: PCT/GB1986/000118 (87) International publication number: WO 1986/005157 (12.09.1986 Gazette 1986/20)

(84) Designated Contracting States: AT BE CH DE FR IT LI NL SE (30) Priority: 06.03.1985 GB 19850005809 (71) Applicant: CONWAY, David, Harrison Haywards Heath, West Sussex RH17 6HQ (GB)	(72) Inventor: CONWAY, David, Harrison Haywards Heath, West Sussex RH17 6HQ (GB) (74) Representative: Warren, Anthony Robert  BARON & WARREN, 18 South End, Kensington London W8 5BU London W8 5BU (GB)