(19)

(11)

EP 0 101 734 A1

(12)

(43) Date of publication: 07.03.1984 Bulletin 1984/10 (21) Application number: 83901932.0 (22) Date of filing: 18.02.1983

(51) International Patent Classification (IPC):  B27G 5/ 02( . ) B27G 19/ 10( . ) (86) International application number: PCT/GB1983/000048 (87) International publication number: WO 1983/002917 (01.09.1983 Gazette 1983/20)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 19.02.1982 GB 19820004873 18.06.1982 GB 19820017650 08.07.1982 GB 19820019583 (71) Applicant: PRUTEC LIMITED London EC1N 2NH (GB)	(72) Inventor: BLAINE, Anthony Frederick Lincolnshire PE9 2YJ (GB) (74) Representative: Messulam, Alec Moses  A. Messulam & Co. 24 Broadway Leigh on Sea Essex SS9 1BN Leigh on Sea Essex SS9 1BN (GB)