(19)

(11)

EP 0 817 696 A2

(12)

(43) Date of publication: 14.01.1998 Bulletin 1998/03 (21) Application number: 96904192.0 (22) Date of filing: 01.03.1996

(51) International Patent Classification (IPC):  B23K 1/ 00( . ) B23K 1/ 20( . ) B23K 35/ 363( . ) B23K 35/ 36( . ) B23K 1/ 19( . ) B23K 35/ 22( . ) B23K 35/ 28( . ) (86) International application number: PCT/GB1996/000452 (87) International publication number: WO 1996/030154 (03.10.1996 Gazette 1996/44)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 31.03.1995 GB 19950006622 (71) Applicant: T & N TECHNOLOGY LIMITED Rugby, Warwickshire CV22 7SA (GB)	(72) Inventors: PERRIN, Carl Rugby, Warwickshire CV22 7EX (GB) TIDD, Jonathan, Lister Birmingham B32 1EX (GB) MARKS, Kevin, Trevor Crick NN6 7TS (GB) (74) Representative: Drury, Peter Lawrence, et al  T&N plc Bowden House Ashburton Road West Trafford Park Manchester M17 1RA Trafford Park Manchester M17 1RA (GB)