(19)

(11)

EP 1 058 600 A1

(12)

(43) Date of publication: 13.12.2000 Bulletin 2000/50 (21) Application number: 99902647.9 (22) Date of filing: 29.01.1999

(51) International Patent Classification (IPC)7: B25D 9/20 (86) International application number: PCT/GB9900/133 (87) International publication number: WO 9938/655 (05.08.1999 Gazette 1999/31)

(84) Designated Contracting States: AT DE ES FI FR GB IT PT (30) Priority: 31.01.1998 GB 9802034 (71) Applicant: Caldervale Engineering Services Limited Airdrie,Lanarkshire ML6 8LS (GB)	(72) Inventor: NAISMITH, George KirkfieldbankLanarkshire ML11 9JU (GB) (74) Representative: Shanks, Andrew  Cruikshank & Fairweather,19 Royal Exchange Square Glasgow G1 3AE Glasgow G1 3AE (GB)