(19)

(11)

EP 1 021 631 A1

(12)

(43) Date of publication: 26.07.2000 Bulletin 2000/30 (21) Application number: 98943905.4 (22) Date of filing: 08.09.1998

(51) International Patent Classification (IPC)7: E04H 12/22, H02G 7/20 (86) International application number: PCT/FI9800/696 (87) International publication number: WO 9913/187 (18.03.1999 Gazette 1999/11)

(84) Designated Contracting States: AT BE CH CY DE DK ES FR GB GR IE IT LI NL PT SE Designated Extension States: AL LT LV RO SI (30) Priority: 08.09.1997 FI 973627 19.12.1997 FI 974586 (71) Applicant: Jerol Oy AB 10600 Ekenäs (FI)	(72) Inventor: JERNSTRÖM, Rolf FIN-10600 Ekenäs (FI) (74) Representative: Laitinen, Pauli Sakari  Patentti-Laitinen Oy,P.O. Box 29 02771 Espoo 02771 Espoo (FI)