(19)

(11)

EP 0 165 238 A1

(12)

(43) Date of publication: 27.12.1985 Bulletin 1985/52 (21) Application number: 84900631.0 (22) Date of filing: 02.02.1984

(51) International Patent Classification (IPC):  B25B 17/ 00( . ) (86) International application number: PCT/GB1984/000027 (87) International publication number: WO 1984/003061 (16.08.1984 Gazette 1984/20)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 10.02.1983 GB 19830003745 (71) Applicant: PERKINS ENGINES GROUP LIMITED London WIY 2EA (GB)	(72) Inventor: RAYWARD, Christopher, Barry Peterborough PE8 6QF (GB)