Pumping unit

Details Pumping unit Pumping unit

1985-12-06

1987-10-13

Look, Edward K.

Power plants

Pressure fluid source and motor

Cyclically operable reciprocating or oscillating motor or...

60328, 60476, F15B 1518

Patent

active

046989684

ABSTRACT:
A pumping unit particularly for pumping oil from an oil bore has an inner stationary cylinder unit and an outer cylinder unit reciprocatable relative to the inner unit by hydraulic fluid; the units are enclosed in a casing and the outer unit functions as a piston in the casing; as the outer unit moves downwardly in the down-stroke, under the action of gravity and hydraulic fluid, air in the casing beneath it is displaced into a reservoir to form a supply of pressurized air; in the upstroke the supply of pressurized air is exploited to drive the outer cylinder upwardly, aided by the hydraulic fluid.

REFERENCES:
patent: 1708584 (1929-04-01), Mason
patent: 2612142 (1952-09-01), Smith
patent: 2699154 (1955-01-01), Smith
patent: 3005413 (1961-10-01), Coberly
patent: 3782117 (1974-01-01), James
patent: 4047384 (1977-09-01), Saruwatari
patent: 4347049 (1982-08-01), Anderson
patent: 4392792 (1983-07-01), Rogers
patent: 4414808 (1983-11-01), Benson
patent: 4512149 (1985-04-01), Weaver

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