Combined fluid motor and pumping apparatus

Details Combined fluid motor and pumping apparatus Combined fluid motor and pumping apparatus

1974-04-29

1976-09-21

Schwadron, Martin P.

Power plants

Pressure fluid source and motor

Pulsator

F15B 710

Patent

active

039811484

ABSTRACT:
A combined fluid motor and pumping apparatus including a unitary multi-land piston device having a motor piston end slidably mounted in a motor portion of an elongated tubular housing and an opposite pump piston end slidably mounted in an opposite pumping portion of the housing wherein the working area of the motor piston end is provided with a greater effective working area than the pump piston end so that upon directing a source of fluid at a predetermined pressure against the motor piston end of the piston device the pumping portion is effective to pressurize a work system to a higher pressure than the pressure at the source of fluid with the housing incorporating a fluid reservoir in the motor portion for making up fluid losses in the pumping portion.

REFERENCES:
patent: 136091 (1875-06-01), Overend
patent: 2517952 (1950-08-01), Welling
patent: 2990687 (1961-07-01), McCrea
patent: 3199298 (1965-09-01), Brown
patent: 3407601 (1968-10-01), Beck
patent: 3550379 (1970-12-01), Cox, Jr.
patent: 3635014 (1972-01-01), Kress
patent: 3768608 (1973-10-01), Fulmer

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