(19)

(11)

EP 1 409 804 A1

(12)

(43) Date of publication: 21.04.2004 Bulletin 2004/17 (21) Application number: 01930492.2 (22) Date of filing: 12.04.2001

(51) International Patent Classification (IPC)7: E04B 2/00 (86) International application number: PCT/US2001/011957 (87) International publication number: WO 2001/079620 (25.10.2001 Gazette 2001/43)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR (30) Priority: 12.04.2000 US 547206 20.09.2000 WO PCT/US00/25791 (71) Applicant: Alliance Concrete Products, Inc. Rochester, MN 55906 (US)	(72) Inventors: PRICE, Raymond, R. Rochester, MN 55902 (US) PRICE, Gerald, P. Rochester, MN 55902 (US) (74) Representative: Waxweiler, Jean et al Dennemeyer & Associates S.A.,P.O. Box 1502 1015 Luxembourg 1015 Luxembourg (LU)