(19)

(11)

EP 0 817 916 A1

(12)

(43) Date of publication: 14.01.1998 Bulletin 1998/03 (21) Application number: 96910484.0 (22) Date of filing: 20.03.1996

(51) International Patent Classification (IPC):  F04B 1/ 14( . ) F04B 11/ 00( . ) F04B 1/ 18( . ) F04B 23/ 06( . ) (86) International application number: PCT/US1996/003777 (87) International publication number: WO 1996/029515 (26.09.1996 Gazette 1996/43)

(84) Designated Contracting States: DE FR GB IE IT NL SE (30) Priority: 20.03.1995 US 19950406399 (71) Applicant: MICROPUMP, INC. Vancouver Washington 98688 (US)	(72) Inventors: BECKETT, Carl, D. Vancouver, WA 98682 (US) O'HARA, Kevin, D. Washougal, WA 98671 (US) OLSEN, Daniel, B. Fort Collins, CO 80521 (US) SOAR, Steven, E. Vancouver, WA 98682 (US) SIEMER, Glenn, E. Vancouver, WA 98683 (US) (74) Representative: Harrison Goddard Foote  1 Cottage Road Leeds LS6 4DD Leeds LS6 4DD (GB)