(19)

(11)

EP 0 135 523 A1

(12)

(43) Date of publication: 03.04.1985 Bulletin 1985/14 (21) Application number: 84900630.0 (22) Date of filing: 02.02.1984

(51) International Patent Classification (IPC):  B25B 27/ 12( . ) F16J 9/ 00( . ) (86) International application number: PCT/GB1984/000026 (87) International publication number: WO 1984/003082 (16.08.1984 Gazette 1984/20)

(84) Designated Contracting States: DE FR (30) Priority: 10.02.1983 GB 19830003753 (71) Applicant: AE PLC Rugby Warwickshire CV22 7SB (GB)	(72) Inventors: COLLYEAR, John, Gowen Warwickshire CV23 8HX (GB) GRAHAM, Neil, Anthony West Midlands CV6 2JJ (GB)