(19)

(11)

EP 0 690 775 A1

(12)

(43) Date of publication: 10.01.1996 Bulletin 1996/02 (21) Application number: 93900207.0 (22) Date of filing: 22.12.1992

(51) International Patent Classification (IPC):  B28B 1/ 08( . ) B28B 15/ 00( . ) B28B 5/ 02( . ) B28B 23/ 02( . ) (86) International application number: PCT/FI1992/000356 (87) International publication number: WO 1993/012918 (08.07.1993 Gazette 1993/16)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IE IT LI NL PT SE (30) Priority: 23.12.1991 FI 19910006098 (71) Applicant: ACOTEC OY SF-15860 Hollola 2 (FI)	(72) Inventors: TAMMINEN, Vesa SF-15870 Hollola (FI) MIKKOLA, Heikki SF-16300 Orimattila (FI) (74) Representative: Siebmanns, Hubertus  Gotapatent AB, Box 154 S-561 22 Huskvarna S-561 22 Huskvarna (SE)