(19)

(11)

EP 1 343 588 A1

(12)

(43) Date of publication: 17.09.2003 Bulletin 2003/38 (21) Application number: 01941385.5 (22) Date of filing: 14.06.2001

(51) International Patent Classification (IPC)7: B02C 18/18 (86) International application number: PCT/SE0101/348 (87) International publication number: WO 0200/0351 (03.01.2002 Gazette 2002/01)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 30.06.2000 SE 0002473 (71) Applicant: Öhrn, Gunnar 184 94 Akersberga (SE)	(72) Inventor: Öhrn, Gunnar 184 94 Akersberga (SE) (74) Representative: Sundström, Per Olof et al Stenhagen Patentbyra ABP.O. Box 4630 116 91 Stockholm 116 91 Stockholm (SE)