Patent ID: 7302883

Claim:
A nutating pump comprising: a pump housing; a prime mover having a drive shaft with a shaft axis, the drive shaft being driven by the prime mover about the shaft axis relative to the pump housing; a plurality of pumping cylinders with axes radially disposed about and generally parallel with the shaft axis, said pumping cylinders being fixed relative to the pump housing; a plurality of wobble pistons, one said wobble piston for each pumping cylinder, each said wobble piston having a piston head and a piston rod fixedly connected to the piston head, each said piston head being received in the associated pumping cylinders in a fit that permits wobbling motion of the piston head relative to the pumping cylinder as the piston is reciprocated; a wobble member connected to the piston rods; and a universal joint connecting the wobble member to the housing.