Patent ID: 7942652

Claim:
A centripetally-powered reciprocating pump, comprising: at least one piston reciprocating within a cylinder; the at least one piston being driven by a piston rod; the piston rod having a first end, an intermediate portion, and a second end, the at least one piston being fixed to the first end of the piston rod; the cylinder comprising intake and outlet valves to take in low pressure fluid when the at least one piston is moved in a first direction and expel high pressure fluid when the at least one piston is moved in a second direction; the piston rod being driven by a gearbox, the gearbox being held in a fixed relation to the intermediate portion; the gearbox containing at least one driven gear; the at least one driven gear driving a shaft mounted in a bearing in the wall of the gearbox; the shaft being oriented substantially perpendicular to the piston rod; the shaft having an inner end and an outer end, the at least one driven gear being fixed to the inner end; the gearbox containing a drive gear rotationally engaging the at least one driven gear; and an eccentric mass fixed to the outer end of the shaft, so that when the drive gear is made to rotate, the driven gear turns the eccentric mass, the eccentric mass exerts a reciprocating force on the gearbox, the gearbox exerts a reciprocating force on the piston rod, and the piston rod exerts a reciprocating force on the at least one piston.