(19)

(11)

EP 0 605 608 A1

(12)

(43) Date of publication: 13.07.1994 Bulletin 1994/28 (21) Application number: 92920875.0 (22) Date of filing: 02.10.1992

(51) International Patent Classification (IPC):  B02C 21/ 02( . ) (86) International application number: PCT/GB1992/001814 (87) International publication number: WO 1993/006930 (15.04.1993 Gazette 1993/10)

(84) Designated Contracting States: DE GB (30) Priority: 02.10.1991 GB 19910020884 (71) Applicant: Douglas, Patrick J. Santon, Douglas, Isle of Man (GB)	(72) Inventor: Douglas, Patrick J. Santon, Douglas, Isle of Man (GB) (74) Representative: Orr, William McLean, et al  URQUHART-DYKES & LORD 5th Floor, Tower House Merrion Way Leeds West Yorkshire, LS2 8PA Leeds West Yorkshire, LS2 8PA (GB)