Dual-inlet gear pump with unequal flow capability

Details Dual-inlet gear pump with unequal flow capability Dual-inlet gear pump with unequal flow capability

2006-08-22

2006-08-22

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

With plural working fluid inlet or outlet passages

C418S206100, C418S206400

Reexamination Certificate

active

07094042

ABSTRACT:
A dual-inlet gear pump includes a drive gear and a driven gear. The invention utilizes the discovery that the drive gear will typically move a higher flow volume than does the driven gear, particularly when the fluid being moved is an air/oil mixture. The present invention takes advantage of this discovery to communicate a first higher expected flow source to the drive gear, and to separately communicate a second, relatively lower expected flow rate to the driven gear. A particular application is in a scavenging pump for a jet engine.

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