(19)

(11)

EP 2 324 162 A1

(12)

(43) Date of publication: 25.05.2011 Bulletin 2011/21 (21) Application number: 08797754.2 (22) Date of filing: 13.08.2008

(51) International Patent Classification (IPC):  E04B 1/74(2006.01) E04B 1/62(2006.01) (86) International application number: PCT/US2008/072970 (87) International publication number: WO 2010/019139 (18.02.2010 Gazette 2010/07)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (71) Applicant: Hansen, William J. Oscoda, MI 48750 (US)	(72) Inventor: Hansen, William J. Oscoda, MI 48750 (US) (74) Representative: Harrison, Michael Robert  Harrison IP Limited Marlborough House Westminster Place York Business Park Nether Poppleton York YO26 6RW Nether Poppleton York YO26 6RW (GB)