(19)

(11)

EP 1 226 361 A1

(12)

(43) Date of publication: 31.07.2002 Bulletin 2002/31 (21) Application number: 00957707.3 (22) Date of filing: 23.08.2000

(51) International Patent Classification (IPC)7: F15D 1/02 (86) International application number: PCT/US0023/121 (87) International publication number: WO 0118/406 (15.03.2001 Gazette 2001/11)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 09.09.1999 US 382184 (71) Applicant: Brown Fintube Houston, TX 77041 (US)	(72) Inventors: SHILLING, Richard, L. Cat Spring, TX 78933 (US) CARLISLE, Glynn, R. Houston, TX 77064 (US) (74) Representative: W.P. THOMPSON & CO.  Coopers Building,Church Street Liverpool L1 3AB Liverpool L1 3AB (GB)