(19)

(11)

EP 0 580 645 A1

(12)

(43) Date of publication: 02.02.1994 Bulletin 1994/05 (21) Application number: 92907779.0 (22) Date of filing: 09.04.1992

(51) International Patent Classification (IPC):  B25H 7/ 04( . ) (86) International application number: PCT/GB1992/000634 (87) International publication number: WO 1992/018292 (29.10.1992 Gazette 1992/27)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 10.04.1991 GB 19910007532 (71) Applicant: ROBESON, George Glasgow G61 2PJ (GB)	(72) Inventor: ROBESON, George Glasgow G61 2PJ (GB) (74) Representative: Stokes, Graeme Wilson, et al  c/o Cruikshank & Fairweather 19 Royal Exchange Square Glasgow G1 3AE Scotland Glasgow G1 3AE Scotland (GB)