(19)

(11)

EP 1 554 442 A2

(12)

(88) Date of publication A3: 27.01.2005 (43) Date of publication: 20.07.2005 Bulletin 2005/29 (21) Application number: 03776251.5 (22) Date of filing: 08.10.2003

(51) International Patent Classification (IPC)7: E04B 1/21, E04C 3/34, E04C 3/44, E04B 1/20, E04C 3/20 (86) International application number: PCT/US2003/031929 (87) International publication number: WO 2004/033810 (22.04.2004 Gazette 2004/17)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 08.10.2002 US 417065 P (71) Applicant: Powell, David W. Austin, TX 78759 (US)	(72) Inventor: Powell, David W. Austin, TX 78759 (US) (74) Representative: Howe, Steven  Lloyd WiseCommonwealth House,1-19 New Oxford Street London WC2A 1LW London WC2A 1LW (GB)