(19)

(11)

EP 1 828 501 A2

(12)

(88) Date of publication A3: 16.11.2006 (43) Date of publication: 05.09.2007 Bulletin 2007/36 (21) Application number: 05855476.7 (22) Date of filing: 23.12.2005

(51) International Patent Classification (IPC):  E04C 3/30(2006.01) E04B 1/00(2006.01) (86) International application number: PCT/US2005/046923 (87) International publication number: WO 2006/071814 (06.07.2006 Gazette 2006/27)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 23.12.2004 US 638646 P (71) Applicant: Scoda America Inc. Muskegon, Michigan 49441 (US)	(72) Inventors: WILBUR, Wesley Scott Norton Shores, Michigan 49441 (US) WILBUR, David Kip Nunica, Michigan 49448 (US) (74) Representative: Miller, James Lionel Woolverton et al Kilburn & Strode, 20 Red Lion Street London WC1R 4PJ London WC1R 4PJ (GB)