(19)

(11)

EP 1 178 870 A1

(12)

(43) Date of publication: 13.02.2002 Bulletin 2002/07 (21) Application number: 99922287.0 (22) Date of filing: 10.05.1999

(51) International Patent Classification (IPC)7: B24B 3/00, A63C 3/10 (86) International application number: PCT/GB9901/464 (87) International publication number: WO 0067/949 (16.11.2000 Gazette 2000/46)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: UNICORN ABRASIVES LIMITED Stafford, Staffordshire ST16 1EA (GB)	(72) Inventors: McHUGH, DonaldUniversal Superabrasives, Inc. Romulus, MI 48174 (US) SCHONFELD, Jeffrey Boyd Lincoln Park, MI 48146 (US) (74) Representative: Shaw, Laurence  5th Floor, Metropolitan House, 1 Hagley Road, Edgbaston Birmingham B16 8TG Birmingham B16 8TG (GB)