(19)

(11)

EP 1 492 988 A2

(12)

(88) Date of publication A3: 08.04.2004 (43) Date of publication: 05.01.2005 Bulletin 2005/01 (21) Application number: 03718136.9 (22) Date of filing: 31.03.2003

(51) International Patent Classification (IPC)7: F25J 3/02 (86) International application number: PCT/US2003/009948 (87) International publication number: WO 2003/085340 (16.10.2003 Gazette 2003/42)

(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: 03.04.2002 US 155150 09.09.2002 US 237847 (71) Applicant: Howe-Baker Engineers, Ltd. Houston, TX 77036 (US)	(72) Inventors: REDDICK, Kenneth Houston, TX 77006 (US) BELHATECHE, Noureddine Katy, TX 77449 (US) (74) Representative: Schnappauf, Georg Dr. et al Geibelstrasse 6 81679 München 81679 München (DE)