(19)

(11)

EP 1 546 476 A2

(12)

(88) Date of publication A3: 17.06.2004 (43) Date of publication: 29.06.2005 Bulletin 2005/26 (21) Application number: 03767011.4 (22) Date of filing: 31.07.2003

(51) International Patent Classification (IPC)7: E04B 1/82, E04B 1/84 (86) International application number: PCT/US2003/023955 (87) International publication number: WO 2004/012931 (12.02.2004 Gazette 2004/07)

(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: 02.08.2002 US 400554 P 09.09.2002 US 237702 09.09.2002 US 237577 (71) Applicant: CTA Acoustics, Inc. Corbin, KY 40702-0448 (US)	(72) Inventor: BARGO, Matthew, II Corbin, KY 40701 (US) (74) Representative: Schwabe - Sandmair - Marx  Stuntzstrasse 16 81677 München 81677 München (DE)