High pressure pump

Pumps – Motor driven – Fluid motor

Patent

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Details

92 90, 417479, F04B 4300, F01B 1900

Patent

active

039457702

ABSTRACT:
A high pressure pumping apparatus which incorporates a chamber adapted to be filled with a fluid to be pumped, a solid, nonyieldable reciprocating member and an opposing nonyieldable member. A resilient plug having a dished out portion is captured between the two members. The dished out portion is contacted and seals to define a closed chamber at the dished portion which chamber reduces in size as the nonyieldable members are relatively moved. A small passage communicates with the dished out chamber in the resilient member to draw fluid therefrom through a check valve mechanism. The apparatus is particularly able to pump extremely small controlled volumes of fluid at very high pressures. A first version thereof supports the resilient member on a solid piston rod which moves toward a fixed metal member. A second version utilizes a diaphragm motor and also discloses an exposed push rod which gives an external indication of operation of the equipment. A third embodiment positions the check valve struture in a solid push rod which travels toward the resilient member which is held against the solid member. A control system is defined responsive to temperature and pressure.

REFERENCES:
patent: 2929332 (1960-03-01), Pierce
patent: 3039271 (1962-06-01), Lind
patent: 3536451 (1970-10-01), Ludwin

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