(19)

(11)

EP 0 521 081 A1

(12)

(43) Date of publication: 07.01.1993 Bulletin 1993/01 (21) Application number: 91906904.0 (22) Date of filing: 20.03.1991

(51) International Patent Classification (IPC):  B02C 18/ 00( . ) B02C 18/ 18( . ) B02C 18/ 14( . ) B02C 18/ 24( . ) (86) International application number: PCT/DK1991/000088 (87) International publication number: WO 1991/014501 (03.10.1991 Gazette 1991/23)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 21.03.1990 DK 19900000734 (71) Applicant: TORP, Per DK-9640 Farsoe (DK)	(72) Inventor: TORP, Per DK-9640 Farsoe (DK) (74) Representative: Nielsen, Leif, et al  c/o Lehmann & Ree A/S Ryesgade 3 DK-8000 Aarhus C DK-8000 Aarhus C (DK)