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US 5,842,848 AGranted
Compact high-volume gear pump
OwnerFrederick W. Knowlesinventor
Life of this patent
Estimating the term…
Abstract
A compact high-volume pump having a unitary body member with a plurality of cavities each containing a rotatable gear, each gear being powered by a single rotatable gear. Each of the cavities is provided with a separate inlet port and separate outlet port and may be employed to perform a plurality of separate pumping functions.
Claims11
A compact high-volume gear pump comprising:
- a unitary body member, said body member having a central cavity and at least two individual cavities opening into said central cavity;
- a cap member having a surface in facing relation with the cavities in said body member;
- a drive gear disposed in said central cavity;
- a planetary gear disposed in each of said individual cavities, each planetary gear being in meshing engagement with said drive gear, said drive gear and said planetary gears each having substantially the same diameter;
- a separate means for directing inflow of fluid into each said individual cavity, said separate means for directing inflow of fluid into each said individual cavity comprising an arcuate opening formed in said cap member surface disposed adjacent each said cavity and extending along the periphery of each planetary gear;
- and
- a separate elongated opening formed in said body member adjacent each of said planetary gear members for outflow of fluid from the respective individual planetary gear cavity.
4 more elements
Dependencies are inferred from the claim text.