(19)

(11)

EP 0 971 811 A1

(12)

(43) Date of publication: 19.01.2000 Bulletin 2000/03 (21) Application number: 98953103.3 (22) Date of filing: 23.10.1998

(51) International Patent Classification (IPC)7: B24C 7/00, B24C 1/00 (86) International application number: PCT/NL9800/613 (87) International publication number: WO 9922/909 (14.05.1999 Gazette 1999/19)

(84) Designated Contracting States: AT BE CH DE ES FR GB LI NL SE (30) Priority: 03.11.1997 NL 1007421 (71) Applicant: Konings, Huibert 1447 RT Purmerend (NL)	(72) Inventor: Konings, Huibert 1447 RT Purmerend (NL)