(19)

(11)

EP 1 409 870 A1

(12)

(43) Date of publication: 21.04.2004 Bulletin 2004/17 (21) Application number: 01957256.9 (22) Date of filing: 25.07.2001

(51) International Patent Classification (IPC)7: F03G 7/00 (86) International application number: PCT/US2001/023477 (87) International publication number: WO 2003/012295 (13.02.2003 Gazette 2003/07)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR (71) Applicant: Halff, Albert H. Dallas, TX 75204 (US)	(72) Inventor: Halff, Albert H. Dallas, TX 75204 (US) (74) Representative: Reuther, Martin  Patentanwaltskanzlei Liermann-Castell,Gutenbergstrasse 12 52349 Düren 52349 Düren (DE)