(19)

(11)

EP 0 103 575 A1

(12)

(43) Date of publication: 28.03.1984 Bulletin 1984/13 (21) Application number: 82903050.0 (22) Date of filing: 06.10.1982

(51) International Patent Classification (IPC):  F41A 9/ 83( . ) F42B 14/ 06( . ) F42B 7/ 10( . ) (86) International application number: PCT/GB1982/000286 (87) International publication number: WO 1983/001300 (14.04.1983 Gazette 1983/09)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 06.10.1981 GB 19810030163 (71) Applicant: ROBINS, Michael John High Street Partridge Green, Sussex (GB)	(72) Inventor: ROBINS, Michael John High Street Partridge Green, Sussex (GB) (74) Representative: Tomlinson, Kerry John  Frank B. Dehn & Co. European Patent Attorneys Imperial House 15-19 Kingsway London WC2B 6UZ London WC2B 6UZ (GB)