(19)

(11)

EP 1 292 425 A1

(12)

(43) Date of publication: 19.03.2003 Bulletin 2003/12 (21) Application number: 01922508.5 (22) Date of filing: 22.03.2001

(51) International Patent Classification (IPC)7: B23P 17/00 (86) International application number: PCT/US0108/971 (87) International publication number: WO 0107/0450 (27.09.2001 Gazette 2001/39)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 23.03.2000 US 191569 P (71) Applicant: Stewart, David H. Houston, TX 77020 (US)	(72) Inventor: Stewart, David H. Houston, TX 77020 (US) (74) Representative: Beresford, Keith Denis Lewis et al BERESFORD & Co.2-5 Warwick Court,High Holborn London WC1R 5DH London WC1R 5DH (GB)