(19)

(11)

EP 0 815 633 A1

(12)

(43) Date of publication: 07.01.1998 Bulletin 1998/02 (21) Application number: 96908891.0 (22) Date of filing: 20.03.1996

(51) International Patent Classification (IPC):  H02K 1/ 14( . ) H02K 3/ 18( . ) H02K 16/ 04( . ) H02K 21/ 22( . ) H02K 1/ 27( . ) H02K 16/ 00( . ) H02K 21/ 12( . ) H02K 21/ 24( . ) (86) International application number: PCT/US1996/003929 (87) International publication number: WO 1996/029774 (26.09.1996 Gazette 1996/43)

(84) Designated Contracting States: AT DE DK ES FR GB GR IE IT NL PT SE (30) Priority: 21.03.1995 US 19950408029 (71) Applicant: Zond Energy Systems, Inc. Tehachapi, California 93561 (US)	(72) Inventors: LIPO, Thomas, A. Middleton, WI 53562 (US) LI, Yue Madison, WI 53705 (US) (74) Representative: Wombwell, Francis  Potts, Kerr & Co. 15, Hamilton Square Birkenhead Merseyside L41 6BR Birkenhead Merseyside L41 6BR (GB)