(19)

(11)

EP 1 208 301 A2

(12)

(88) Date of publication A3: 12.04.2001 (43) Date of publication: 29.05.2002 Bulletin 2002/22 (21) Application number: 99928716.2 (22) Date of filing: 16.06.1999

(51) International Patent Classification (IPC)7: F03D 9/00, F03B 13/00, H02P 9/04 (86) International application number: PCT/US9913/580 (87) International publication number: WO 0077/914 (21.12.2000 Gazette 2000/51)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: Prime Energy Corporation, a Neveda Corporation Gardnerville,Nevada 89410 (US)	(72) Inventors: CHAPMAN, Jamie, C. Boston, MA 02210-1225 (US) PETERKA, Jon, M. Ft. Collins, CO 80525 (US) (74) Representative: Harrison Goddard Foote  Belgrave HallBelgrave Street Leeds LS2 8DD Leeds LS2 8DD (GB)