(19)

(11)

EP 1 412 589 A1

(12)

(43) Date of publication: 28.04.2004 Bulletin 2004/18 (21) Application number: 01947210.9 (22) Date of filing: 02.07.2001

(51) International Patent Classification (IPC)7: E04B 2/30 (86) International application number: PCT/DK2001/000460 (87) International publication number: WO 2003/004790 (16.01.2003 Gazette 2003/03)

(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 (71) Applicant: Midtjydsk Murbinderfabrik A/S 8800 Viborg (DK)	(72) Inventor: LAURSEN, Knud,c/o Midtjydsk Murbinderfabrik A/S DK-8800 Viborg (DK) (74) Representative: Larsen, Hans Ole  Larsen & Birkeholm A/S,Banegaardspladsen 1,P.O. Box 362 1570 Copenhagen V 1570 Copenhagen V (DK)