(19)

(11)

EP 2 609 261 A1

(12)

(43) Date of publication: 03.07.2013 Bulletin 2013/27 (21) Application number: 10856510.2 (22) Date of filing: 24.08.2010

(51) International Patent Classification (IPC):  E04F 13/08(2006.01) E04D 1/16(2006.01) E04D 1/04(2006.01) E04C 2/38(2006.01) (86) International application number: PCT/US2010/046538 (87) International publication number: WO 2012/026925 (01.03.2012 Gazette 2012/09)

(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 (71) Applicant: Lee, Robert G. Portland, OR 97239 (US)	(72) Inventor: Lee, Robert G. Portland, OR 97239 (US) (74) Representative: Hoarton, Lloyd Douglas Charles  Forresters Skygarden Erika-Mann-Strasse 11 80636 München 80636 München (DE)