(19)

(11)

EP 2 430 252 A1

(12)

(43) Date of publication: 21.03.2012 Bulletin 2012/12 (21) Application number: 10720975.1 (22) Date of filing: 19.05.2010

(51) International Patent Classification (IPC):  E04B 5/10(2006.01) E04B 5/14(2006.01) (86) International application number: PCT/US2010/035467 (87) International publication number: WO 2010/135464 (25.11.2010 Gazette 2010/47)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 19.05.2009 US 468767 01.09.2009 US 552132 (71) Applicant: Roen, Roger C. Spokane, Washington 99224 (US)	(72) Inventor: Roen, Roger C. Spokane, Washington 99224 (US) (74) Representative: Style, Kelda Camilla Karen  Page White & Farrer Bedford House John Street London, WC1N 2BF London, WC1N 2BF (GB)