(19)

(11)

EP 1 951 968 A1

(12)

(43) Date of publication: 06.08.2008 Bulletin 2008/32 (21) Application number: 06837306.7 (22) Date of filing: 09.11.2006

(51) International Patent Classification (IPC):  E04C 2/04(2006.01) (86) International application number: PCT/US2006/043757 (87) International publication number: WO 2007/056562 (18.05.2007 Gazette 2007/20)

(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: 09.11.2005 US 736123 P 01.02.2006 US 345349 (71) Applicant: Conboy, John S. Chesterfield, MO 63005 (US)	(72) Inventor: Conboy, John S. Chesterfield, MO 63005 (US) (74) Representative: Dennemeyer, John James et al Dennemeyer & Associates S.A. 55, rue des Bruyères 1274 Howald 1274 Howald (LU)