(19)

(11)

EP 1 957 724 A2

(12)

(43) Date of publication: 20.08.2008 Bulletin 2008/34 (21) Application number: 06839915.3 (22) Date of filing: 16.11.2006

(51) International Patent Classification (IPC):  E04B 1/38(2006.01) (86) International application number: PCT/US2006/060960 (87) International publication number: WO 2007/059525 (24.05.2007 Gazette 2007/21)

(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 Designated Extension States: AL BA HR MK RS (30) Priority: 17.11.2005 US 737501 P (71) Applicant: Gibbs, Alden T. Wilmington DE 19806 (US)	(72) Inventor: Gibbs, Alden T. Wilmington DE 19806 (US) (74) Representative: Wagner, Karl H.  Wagner & Geyer Partnerschaft Patent- und Rechtsanwälte Gewürzmühlstrasse 5 80538 München 80538 München (DE)