Fluid driven reciprocating pump

Details Fluid driven reciprocating pump Fluid driven reciprocating pump

1996-10-23

1998-06-02

Nguyen, Hoang

Motors: expansible chamber type

Cyclically operable

Biasing means moves distributor after predetermined travel

91329, 91350, 417393, 417395, F01L 3102, F04B 1700

Patent

active

057585636

ABSTRACT:
A fluid-driven reciprocating pump includes a housing and a reciprocating assembly defining first and second working fluid chambers. The housing includes an inlet and an outlet for introduction and exhaustion of the working fluid. A valve member slidably moves against a valve surface between a first position, in which communication is established between the first working fluid chamber and either the power fluid inlet or outlet, and a second position in which communication is established between the second working fluid chamber and the same inlet or outlet. The reciprocating assembly includes a rod which moves in response to the introduction and exhaustion of the power fluid into and out of the first and second working chambers. A control valve actuator shifts the valve member between the first and second positions in response to the movement of the reciprocating rod and also urges the valve member toward the valve surface to form a fluid-tight union therebetween.

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