Displacement pump as well as a pump assembly comprising two disp

Details Displacement pump as well as a pump assembly comprising two disp Displacement pump as well as a pump assembly comprising two disp

1994-09-14

1995-10-24

Bertsch, Richard A.

Pumps

Motor driven

Fluid motor

417426, 91536, F04B 3502

Patent

active

054604915

ABSTRACT:
The invention relates to a pump assembly comprising first and second pump units designed to be driven hydraulically, consisting of pump housing chambers, pump housing cylinders with pumping plungers mounted therein, and hydraulic cylinders with driving chambers which can be connected to a pressure source through a control valve for developing in the driving chambers a certain hydraulic pressure, which is used to operate the driving plungers.

REFERENCES:
patent: 4097198 (1978-06-01), Herron
patent: 4455921 (1984-06-01), Griesbach
patent: 4477232 (1984-10-01), Mayer
patent: 4701112 (1987-10-01), Eisenhunt et al.
patent: 4856967 (1989-08-01), Jones
patent: 5222873 (1993-06-01), Whitehead et al.
patent: 5315916 (1994-05-01), Foster
patent: 5331842 (1994-07-01), Wellemeyer
patent: 5348451 (1994-09-01), Mohn

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